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

  • n. Any of numerous monoecious deciduous or evergreen trees or shrubs of the genus Quercus, bearing acorns as fruit.
  • n. The durable wood of any of these trees or shrubs.
  • n. Something made of this wood.
  • n. Any of various similar trees or shrubs, such as the poison oak.
  • n. Any of various brown shades resembling the wood of an oak in color.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A tree of the genus Quercus.
  • n. The wood of the oak.
  • n. A rich brown colour, like that of oak wood.
  • adj. of a rich brown colour, like that of oak wood.
  • adj. made of oak wood or timber
  • adj. consisting of oak trees

from the GNU version of the Collaborative International Dictionary of English

  • n. Any tree or shrub of the genus Quercus. The oaks have alternate leaves, often variously lobed, and staminate flowers in catkins. The fruit is a smooth nut, called an acorn, which is more or less inclosed in a scaly involucre called the cup or cupule. There are now recognized about three hundred species, of which nearly fifty occur in the United States, the rest in Europe, Asia, and the other parts of North America, a very few barely reaching the northern parts of South America and Africa. Many of the oaks form forest trees of grand proportions and live many centuries. The wood is usually hard and tough, and provided with conspicuous medullary rays, forming the silver grain.
  • n. The strong wood or timber of the oak.

from The Century Dictionary and Cyclopedia

  • n. A tree or shrub of the genus Quercus, a large and widely dispersed group, chiefly of forest-trees.
  • n. One of various other trees or plants in some respects resembling the oak.
  • n. The wood of an oak-tree.
  • n. One of certain moths: as, the scalloped oak. [British collectors' name.]
  • n. The club at cards.
  • n. The red oak.
  • n. Quercus Emoryi of Texas.
  • n. Same as shingle-oak.
  • n. The Turkey oak.
  • n. Same as cañon live-oak.
  • n. The wall germander, Teucrium Chamædrys.
  • n. Gambel's oak, Q. Gambelii.
  • n. The Texan oak, Q, Texana.
  • n. Same as tarata.
  • n. The mountain white oak, Q. Douglasii.
  • n. Same as Gambel's oak.
  • n. The California white oak, Quercus lobata.
  • n. Same as Texan oak.
  • n. The water-oak, Q. nigra.
  • n. The laurel-oak, Quercus laurifolia.
  • n. See Durand's oak.
  • n. In Australia, a small malvaceous tree, Lagunaria Patersoni. See whitewood.

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

  • n. the hard durable wood of any oak; used especially for furniture and flooring
  • n. a deciduous tree of the genus Quercus; has acorns and lobed leaves


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

Middle English ok, from Old English āc.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English ook, from Old English āc, from Proto-Germanic *aiks (compare Scots aik, West Frisian iik, Dutch eik, German Eiche, Danish eg), from Proto-Indo-European *eiḱ or *eiǵ- (compare Latin aesculus ("Durmast oak"), Lithuanian ąžuolas ("oak"), Albanian enjë ("juniper, yew"), Ancient Greek  (aigilōps, "Turkey oak"))



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  • The talking oak

    To the ancients spoke.

    But any tree

    Will talk to me.

    What truths I know

    I garnered so.

    - Mary Carolyn Davies, 'Be Different To Trees'.

    November 12, 2008