Definitions

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

  • n. Any of several deciduous trees of the genus Juglans, having pinnately compound leaves and a round, sticky outer fruit wall that encloses a nutlike stone with an edible seed.
  • n. The stone or the ridged or corrugated seed of such a tree.
  • n. The hard, dark brown wood of any of these trees, used for gunstocks and in cabinetwork.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A hardwood tree of the genus Juglans.
  • n. A nut of the walnut tree.
  • n. Wood of the walnut tree.
  • n. Dark brown colour, the colour of walnut wood.
  • adj. Having a dark brown colour, the colour of walnut wood.

from the GNU version of the Collaborative International Dictionary of English

  • n. The fruit or nut of any tree of the genus Juglans; also, the tree, and its timber. The seven or eight known species are all natives of the north temperate zone.

from The Century Dictionary and Cyclopedia

  • In the West Indies, a name often applied to the angelin or cabbage-tree, Vouacapoua Americana, from its resemblance in leaf and fruit to the English walnut. See cabbage-tree, 2, and Andira.
  • n. The fruit of the nut-bearing tree Juglans regia; also, the tree itself, or its wood.
  • n. In the United States, frequently, same as black walnut and rock-walnut (the fruit, the tree, or its wood). See below.
  • n. In parts of New York, New England, and some other lo calities, same as hickory-nut or hickory. This is sometimes distinguished as shagbark or shell-bark walnut.

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

  • n. nut of any of various walnut trees having a wrinkled two-lobed seed with a hard shell
  • n. any of various trees of the genus Juglans
  • n. hard dark-brown wood of any of various walnut trees; used especially for furniture and paneling

Etymologies

Middle English walnot, from Old English wealhhnutu : wealh, Celt, foreigner + hnutu, nut.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Old English walhhnutu, from Proto-Germanic *walhaz (“Celt, Roman, foreigner”) (whence Walloon, Welsh) + *hnutuz (whence nut). Cognate with Dutch walnoot, German Walnuss, Swedish valnöt. Compare more recent term Welsh onion, which also uses Welsh to mean “foreign”. (Wiktionary)

Examples

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