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

  • n. A usually soft and close-fitting head covering, either having no brim or with a visor.
  • n. A special head covering worn to indicate rank, occupation, or membership in a particular group: a cardinal's cap; a sailor's cap.
  • n. An academic mortarboard. Used especially in the phrase cap and gown.
  • n. A protective cover or seal, especially one that closes off an end or a tip: a bottle cap; a 35-millimeter lens cap.
  • n. A crown for covering or sealing a tooth.
  • n. A tread for a worn pneumatic tire.
  • n. A fitted covering used to seal a well or large pipe.
  • n. Chiefly Southern U.S. See eye.
  • n. A summit or top, as of a mountain.
  • n. An upper limit; a ceiling: placed a cap on mortgage rates.
  • n. Architecture The capital of a column.
  • n. Botany The top part, or pileus, of a mushroom.
  • n. Botany A calyptra.
  • n. A percussion cap.
  • n. A small explosive charge enclosed in paper for use in a toy gun.
  • n. Any of several sizes of writing paper, such as foolscap.
  • n. Sports An appearance by a player in an international soccer game, traditionally rewarded with a hat.
  • transitive v. To cover, protect, or seal with a cap.
  • transitive v. To award a special cap to as a sign of rank or achievement: capped the new women nurses at graduation.
  • transitive v. To lie over or on top of; cover: hills capped with snow.
  • transitive v. To apply the finishing touch to; complete: cap a meal with dessert.
  • transitive v. To follow with something better; surpass or outdo: capped his last trick with a disappearing act that brought the audience to its feet.
  • transitive v. To set an upper limit on: decided to cap cost-of-living increases.
  • idiom cap in hand Humbly or submissively.
  • idiom set (one's) cap for To attempt to attract and win as a mate.
  • n. A capital letter.
  • transitive v. To capitalize.
  • n. Informal Capital: venture cap.
  • n. Informal Capitalization: market cap.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A close-fitting head covering either without a brim or with a peak.
  • n. A special head covering to indicate rank, occupation etc.
  • n. An academic mortarboard
  • n. A protective cover or seal
  • n. A crown for covering a tooth
  • n. The summit of a mountain etc.
  • n. An artificial upper limit or ceiling
  • n. The top part of a mushroom
  • n. The cap worn by players as protection from the sun; the cap awarded to a player when first selected to play for a side
  • n. A small amount of gunpowder in a paper strip or plastic cup for use in a toy gun
  • n. A small explosive device used to detonate a larger charge of explosives
  • n. A bullet used to shoot someone.
  • n. An international appearance
  • n. An upper limit on the interest rate payable on an otherwise variable-rate loan, used by borrowers to defend against interest rate increases. Opposite of a floor.
  • v. To cover or seal with a cap
  • v. To award a cap as a mark of distinction etc.
  • v. To lie over or on top of something
  • v. To surpass or outdo
  • v. To set an upper limit on something
  • v. To make something even more wonderful at the end.
  • v. To select a player to play for a specified side
  • v. To shoot someone
  • v. to select to play for the national team.
  • v. To uncover the head respectfully.
  • n. Capitalization.
  • n. An uppercase letter
  • v. To convert text to uppercase

from the GNU version of the Collaborative International Dictionary of English

  • n. A covering for the head.
  • n. One usually with a visor but without a brim, for men and boys.
  • n. One of lace, muslin, etc., for women, or infants.
  • n. One used as the mark or ensign of some rank, office, or dignity, as that of a cardinal.
  • n. The top, or uppermost part; the chief.
  • n. A respectful uncovering of the head.
  • n. The whole top of the head of a bird from the base of the bill to the nape of the neck.
  • n. Anything resembling a cap in form, position, or use.
  • n. The uppermost of any assemblage of parts; ; a capital, coping, cornice, lintel, or plate.
  • n. Something covering the top or end of a thing for protection or ornament.
  • n. A collar of iron or wood used in joining spars, as the mast and the topmast, the bowsprit and the jib boom; also, a covering of tarred canvas at the end of a rope.
  • n. A percussion cap. See under Percussion.
  • n. The removable cover of a journal box.
  • n. A portion of a spherical or other convex surface.
  • n. A large size of writing paper.
  • n.
  • intransitive v. To uncover the head respectfully.
  • transitive v. To cover with a cap, or as with a cap; to provide with a cap or cover; to cover the top or end of; to place a cap upon the proper part of.
  • transitive v. To deprive of cap.
  • transitive v. To complete; to crown; to bring to the highest point or consummation.
  • transitive v. To salute by removing the cap.
  • transitive v. To match; to mate in contest; to furnish a complement to.

from The Century Dictionary and Cyclopedia

  • To put a cap on; cover with or as with a cap, in any sense of that word; cover the head, top, end, or some particular part of: as, to cap a dunce at school; to cap (the nipple of) a gun.
  • To complete; consummate; crown; bring to a climax; follow up with something more remarkable than what has previously been done: as, to cap a story with its moral; he capped this exploit by another still more audacious.
  • To puzzle.
  • To deprive of the cap.
  • To salute by taking off the cap: as, to cap a proctor.
  • To uncover the head in reverence or civility.
  • To arrest.
  • To seize; lay hold of violently; specifically, to seize (a vessel) as a prize; hence, to entrap or insnare.
  • To chap, as the hands.
  • To wrinkle.
  • To coagulate.
  • An abbreviation of capital;
  • of Latin caput or capitulum, chapter;
  • in printing, of capitalize.
  • n. A covering for the head; a hood; now, especially, a head-covering or head-dress made of soft material and usually fitting more closely to the head than a hat.
  • n. Anything resembling a cap in appearance, position, or use.
  • n. [⟨ foolscap, orig. used with ref. to the old water-mark of the fool's tap and bells.] A name given, with distinctive qualifications, to several sizes of writing-paper.
  • n. The head, chief, or top; the acme.
  • n. Head, chief, or master.
  • n. An act of respect performed by uncovering the head.
  • n. A cap-sheaf (which see).
  • n. plural Fungi.
  • n. A cape. See cape.
  • n. The cap drawn over the head of a criminal immediately before he is hanged.
  • n. the cap within the rim or circle of the crown, and covering the head. Such caps are represented of different colors, which are mentioned in the blazon.
  • n. A wooden bowl: as, a cap of porridge and milk. Also caup.
  • n. The calyptra of a moss.
  • n. A cover of leather or other material for the lens of a camera to exclude light and dust. If a shutter is not used, the exposure is usually made by removing and replacing the cap.
  • n. In carriage-trimming, a funnel-shaped leather pocket used to cover the lower ends of carriage-bows and the ends of the bow-irons.
  • n. In architecture: Same as capital: in common use among masons.
  • n. A coping or other finish of the top of a post or pier or wall, especially anything projecting slightly beyond the vertical faces.
  • n. Hence — The horizontal molding finishing at the top a window-trim, door-trim or architrave.
  • n. The uppermost member of a hand-rail, as in a balustrade or the like; that part of a hand-rail which is molded to allow the hand to grasp it.
  • n. One of the white spots which appear at the poles of Mars and increase and decrease with the changes of the planet's seasons.
  • n. In steam-skidding, a cone of sheet-iron or steel, with a hole in the end through which a chain passes, which is fitted over the end of a log before snaking it, to prevent it from catching on stumps, roots, or other obstacles.
  • n. In mining, a horizontal timber resting on a prop or on one or more legs, used to support the roof.
  • n. Same as marotte.
  • n. to pause and consider carefully before deciding or acting.

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

  • n. a tight-fitting headdress
  • v. restrict the number or amount of
  • n. a top (as for a bottle)
  • n. a protective covering that is part of a plant
  • v. lie at the top of
  • n. an upper limit on what is allowed
  • n. something serving as a cover or protection
  • n. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
  • n. a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
  • n. the upper part of a column that supports the entablature
  • n. a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive


Middle English cappe, from Old English cæppe, from Late Latin cappa.
Shortened form of capital1.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English cappe, from Old English cæppe, from Late Latin cappa. (Wiktionary)
From capitalization, by shortening (Wiktionary)
From capital, by shortening (Wiktionary)



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