from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Relatively hard, naturally formed mineral or petrified matter; stone.
  • n. A relatively small piece or fragment of such material.
  • n. A relatively large body of such material, as a cliff or peak.
  • n. A naturally formed aggregate of mineral matter constituting a significant part of the earth's crust.
  • n. One that is similar to or suggestive of a mass of stone in stability, firmness, or dependability: The family has been his rock during this difficult time.
  • n. Slang Money.
  • n. Slang A large gem, especially a diamond.
  • n. Slang Crack cocaine.
  • n. A varicolored stick candy.
  • n. Rock candy.
  • idiom between a rock and a hard place Confronted with equally unpleasant alternatives and few or no opportunities to evade or circumvent them.
  • idiom on the rocks In a state of difficulty, destruction, or ruin: Their marriage is on the rocks.
  • idiom on the rocks Without money; bankrupt: Our accountant says the business is on the rocks.
  • idiom on the rocks Served over ice cubes: Scotch on the rocks.
  • intransitive v. To move back and forth or from side to side, especially gently or rhythmically.
  • intransitive v. To sway violently, as from a blow or shock. See Synonyms at swing.
  • intransitive v. To be washed and panned in a cradle or in a rocker. Used of ores.
  • intransitive v. Music To play or dance to rock 'n' roll.
  • transitive v. To move back and forth or from side to side, especially in order to soothe or lull to sleep.
  • transitive v. To cause to shake or sway violently. See Synonyms at agitate.
  • transitive v. To disturb the mental or emotional equilibrium of; upset: News of the scandal rocked the town.
  • transitive v. To wash or pan (ore) in a cradle or rocker.
  • transitive v. In mezzotint engraving, to roughen (a metal plate) with a rocker or roulette.
  • n. A rocking motion.
  • n. The act of rocking.
  • n. Music Rock 'n' roll.
  • idiom rock the boat Slang To disturb the balance or routine of a situation: He has an easygoing managerial style and won't rock the boat unless absolutely necessary.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The naturally occurring aggregate of solid mineral matter that constitutes a significant part of the earth's crust.
  • n. A mass of stone projecting out of the ground or water.
  • n. A boulder or large stone.
  • n. A large hill or island having no vegetation.
  • n. Something that is strong, stable, and dependable; a person who provides security or support to another.
  • n. Any natural material with a distinctive composition of minerals.
  • n. A precious stone or gem, especially a diamond.
  • n. A lump or cube of ice.
  • n. A type of confectionery made from sugar in the shape of a stick, traditionally having some text running through its length.
  • n. A crystallized lump of crack cocaine.
  • n. An unintelligent person, especially one who repeats mistakes.
  • n. An Afrikaner.
  • n. An extremely conservative player who is willing to play only the very strongest hands.
  • n. A basketball (ball).
  • n. A style of music characterized by basic drum-beat, generally 4/4 riffs, based on (usually electric) guitar, bass guitar, drums, and vocals.
  • v. To play, perform, or enjoy rock music, especially with a lot of skill or energy.
  • v. To be very favourable or skilful; to excel.
  • v. to thrill or excite, especially with rock music
  • v. to do something with excitement yet skillfully
  • v. To wear (a piece of clothing, outfit etc.) successfully or with style; to carry off (a particular look, style).
  • n. distaff
  • n. The flax or wool on a distaff.
  • v. To move gently back and forth.
  • v. To cause to shake or sway violently.
  • v. To sway or tilt violently back and forth.
  • v. To be washed and panned in a cradle or in a rocker.
  • v. To disturb the emotional equilibrium of; to distress; to greatly impact (most often positively).

from the GNU version of the Collaborative International Dictionary of English

  • n. See roc.
  • n. A distaff used in spinning; the staff or frame about which flax is arranged, and from which the thread is drawn in spinning.
  • n. A large concreted mass of stony material; a large fixed stone or crag. See stone.
  • n. Any natural deposit forming a part of the earth's crust, whether consolidated or not, including sand, earth, clay, etc., when in natural beds.
  • n. That which resembles a rock in firmness; a defense; a support; a refuge.
  • n. Fig.: Anything which causes a disaster or wreck resembling the wreck of a vessel upon a rock.
  • n. The striped bass. See under Bass.
  • intransitive v. To move or be moved backward and forward; to be violently agitated; to reel; to totter.
  • intransitive v. To roll or saway backward and forward upon a support.
  • transitive v. To cause to sway backward and forward, as a body resting on a support beneath; ; to cause to vibrate; to cause to reel or totter.
  • transitive v. To move as in a cradle; hence, to put to sleep by rocking; to still; to quiet.

from The Century Dictionary and Cyclopedia

  • To throw stones at; stone.
  • To move backward and forward, as a body supported below (especially on a single point, a narrow line, or a curved base); cause to sway upon a support: as, to rock a cradle; to rock a chair; sometimes, to cause to reel or totter.
  • To move backward and forward in a cradle, chair, etc.
  • To lull; quiet, as if by rocking in a cradle.
  • In engraving, to abrade the surface of, as a copper or steel plate, preparatory to scraping a mezzotinto. See cradle, n., 4 .
  • To cleanse by rocking or shaking about in sand.
  • To affect by rocking in a manner indicated by a connected word or words: as, to rock one into a headache; the earthquake rocked down the houses.
  • To move backward and forward; be moved backward and forward; reel.
  • n. The mass of mineral matter of which the earth, so far as accessible to observation, is made up; a mass, fragment, or piece of that crust, if too large to be designated as a stone, and if spoken of in a general way without special designation of its nature.
  • n. A stone of any size, even a pebble.
  • n. A mass of stone forming an eminence or a cliff.
  • n. Hence, in Scripture, figuratively, foundation; strength; asylum; means of safety; defense.
  • n. A cause or source of peril or disaster: from the wrecking of vessels on rocks: as, this was the rock on which he split.
  • n. A kind of hard sweetmeat, variously flavored.
  • n. Same as rockfish, 1 .
  • n. The rock-dove, Calumba livia, more fully called blue-rock.
  • n. A kind of soap. See the quotation.
  • n. A piece of money: commonly in the plural: as, a pocketful of rocks.
  • n. A very hard kind of cheese, made from skimmed milk, used in Hampshire, England.
  • n. Synonyms It is an error to use rock for a stone so small that a man can handle it: only a fabulous person or a demi-god can lift a rock.
  • n. The act of rocking; specifically, a step in fancy dancing.
  • n. A distaff used in hand-spinning; the staff or frame about which the flax or wool is arranged from which the thread is drawn in spinning.
  • n. A young hedgehog.
  • n. See roc.
  • n. A / B ⟨ 7 / 1 ⟩ 5 / 3, A dominates over B;
  • n. A / B ⟨ 5 / 3 ⟩ 3 / 5, A and B are equal or nearly equal;
  • n. A / B ⟨ 3 / 5 ⟩ 1 / 7, B dominates over A;
  • n. A / B ⟨ 1 / 7, B is extreme. Names or terms applicable to and are formed with the prefix per-; those applicable to and are formed with the prefix do-; terms applied to combine two syllables mnemonic of the two factors compared. All igneous rocks fall into five classes, according to the proportions of the salic and femic groups of standard minerals expressing their chemical composition, that is, according to the proportions of the salic and femic minerals in their norms. These minerals are calculated from a chemical analysis of the rock, which may have been obtained by the usual chemical methods, or by calculation from the mineral composition of the rock determined by optical methods. The five classes are: persalane, extremely salic, including rocks high in quartz, feldspar or feldspathoids, corundum or zircon;
  • n. dosalane, dominantly salic, including rocks in which the minerals just mentioned dominate over the femic minerals;
  • n. salfemane, equally, or nearly equally, salic and femic;
  • n. dofemane, dominantly femic;
  • n. perfemane, extremely femic, including such rocks as peridotites and pyroxenites. Each class is divided into five subclasses on the proportions of two subgroups of the predominant group of standard minerals. For salic minerals the subgroups are: quartz, feldspars, feldspathoids;
  • n. corundum, zircon. For femic minerals the subgroups are: pyroxenes, olivin, akermanite, magnetite, hematite, titanite, ihnenite, perofskite, rutile;
  • n. apatite, fluorite, pyrite, etc. Almost all igneous rocks belong to the first subclass in each class. Few are rich in corundum, or zircon, or apatite. Orders are based on the proportions of mineral subdivisions of the preponderant subgroup making a subclass. Thus of the first subgroup of salic minerals, quartz and feldspars are compared with each other, and feldspars and feldspathoids, yielding nine orders in classes 1, 2, 3, as: perquaric
  • n. doquaric, etc. The orders are further divided into sections by comparing the proportions of normative pyroxene with olivin and akermanite, and the proportions of normative minerals having ferric iron with those containing titanium oxid. Rangs are formed on the character of the chemical basis in the groups of standard minerals forming orders. Thus in the first three classes the five rangs are based on the proportions of K2O + Na2O to CaO in the salic minerals, making: peralkalic
  • n. domalkalic
  • n. alkalicalcic
  • n. docalcic
  • n. percalcic. In the last two classes the rangs are based on the proportions of CaO + MgO + FeO to K2O + Na2O in the femic minerals, giving: permirlic
  • n. domirlic
  • n. alkalimirlic
  • n. domalkalic
  • n. peralkalie. Subrangs are based on the proportions of the chemical components within the dominant group of oxids. Thus when the alkalis are dominant the subrangs are: perpotassic.
  • n. dopotassic
  • n. sodipotassic
  • n. dosodic
  • n. persodic. In rangs in which CaO + MgO + FeO dominate sections of rangs are based on the proportions of MgO + FeO compared with CaO, giving: permiric
  • n. domiric
  • n. calcimiric
  • n. docalcic
  • n. percalcic. Subrangs of these are based on the proportions of MgO and FeO, and are: permagnesic
  • n. domagnesic
  • n. magnesiferrous
  • n. doferrous
  • n. perferrous. Grads, the next taxonomic divisions, are based on the proportions of subdivisions of the subordinate group of standard minerals in a manner analogous to the formation of orders; subgrads are based on the chemical characters of these minerals in a manner similar to that followed in forming rangs. The names of other divisions of the system are constructed from geographical names with suffixes peculiar to the different ranks of the system as follows: -ane, class; -one, subclass; -are, order; -ore, suborder; -ase, rang; -ose, subrang; -ate, grad; -ote, subgrad. The termination for the name of a section of any of these is formed by inserting i before the proper suffix.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a lump or mass of hard consolidated mineral matter
  • n. a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western
  • v. cause to move back and forth
  • n. hard bright-colored stick candy (typically flavored with peppermint)
  • n. United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
  • n. (figurative) someone who is strong and stable and dependable
  • n. material consisting of the aggregate of minerals like those making up the Earth's crust
  • n. pitching dangerously to one side
  • v. move back and forth or sideways


Middle English, from Old North French roque, from Vulgar Latin *rocca.
Middle English rokken, from Old English roccian.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English rocke, rokke ("rock formation"), from Old English *rocc (“rock”), as in Old English stānrocc ("high stone rock, peak, obelisk"), and also later from Anglo-Norman, Old Northern French roc, roce, roque (compare Modern French roche, from Old French), from Medieval Latin rocca (attested 767), from Vulgar Latin *rocca, of uncertain origin, sometimes said to be of Celtic origin (compare Breton roch). (Wiktionary)
From Middle English rokken, from Old English roccian, from Proto-Germanic *rukkōnan (compare obsolete Dutch (Holland) rokken, Middle High German rocken ‘to drag, jerk’, Icelandic rukka ‘to yank’), from *rugnōnan, from Proto-Indo-European *h₃ruk-néh₂-, from *h₃runk- (compare Latin runcāre ("to weed"), Latvian rũķēt ("to toss, dig")). (Wiktionary)
Shortened from rock and roll. Since the meaning of rock has adapted to mean a simpler, more modern, metal-like genre, rock and roll has generally been left referring to earlier forms such as that of the 1950s, notably more swing-oriented style. (Wiktionary)
From Middle Dutch rocke (whence Dutch rok), Middle Low German rocken, or Old Norse rokkr (whence Icelandic / Faroese rokkur, Danish rok, Swedish spinnrock ("spinning wheel")). Cognate with Old High German rocko ("distaff"). (Wiktionary)



Log in or sign up to get involved in the conversation. It's quick and easy.