Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An elongated pointed tooth, usually one of a pair, extending outside of the mouth in certain animals such as the walrus, elephant, or wild boar.
  • noun A long projecting tooth or toothlike part.
  • transitive & intransitive verb To gore or dig with the tusks or a tusk.

from The Century Dictionary.

  • To gore with the tusks.
  • To move, turn, or thrust with the tusks.
  • To gnash the teeth, as a boar; show the tusks.
  • noun A tuft; a bush.
  • noun A fish: same as torsk.
  • noun A long pointed tooth; especially, a tooth long enough to protrude from the lips when the mouth is closed.
  • noun A sharp projecting point resembling in some degree a tusk or tooth of an animal.
  • noun In locks, a sharp projecting point or claw which forms a means of attachment or engagement.
  • noun In carpentry, a bevel shoulder on a tenon to give it additional strength.
  • noun A tooth-shell. See Dentaliidæ, and cut under tooth-shell.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Zoöl.) Same as torsk.
  • noun (Zoöl.) One of the elongated incisor or canine teeth of the wild boar, elephant, etc.; hence, any long, protruding tooth.
  • noun (Zoöl.) A toothshell, or Dentalium; -- called also tusk-shell.
  • noun (Carp.) A projecting member like a tenon, and serving the same or a similar purpose, but composed of several steps, or offsets. Thus, in the illustration, a is the tusk, and each of the several parts, or offsets, is called a tooth.
  • intransitive verb obsolete To bare or gnash the teeth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun One of a pair of elongated pointed teeth that extend outside the mouth of an animal such as walrus, elephant or wild boar.
  • noun A small projection on a (tusk) tenon.
  • verb To dig up using a tusk, as boars do.
  • verb obsolete To bare or gnash the teeth.

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

  • noun a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses
  • noun a long pointed tooth specialized for fighting or digging; especially in an elephant or walrus or hog
  • verb remove the tusks of animals
  • verb stab or pierce with a horn or tusk

Etymologies

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

[Middle English tux, tusce, from Old English tūx, tūsc, canine tooth; see dent- in Indo-European roots.]

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

[Of North Germanic origin; akin to dialectal Norwegian tosk and Faroese toskur, cod, both from Old Norse thorskr; see ters- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English tusk (also tux, tusch), from Old English tūx, tūsc ("grinder, canine tooth, tusk"), from Proto-Germanic *tunþskaz (“tooth”), extended form of Proto-Germanic *tanþs (“tooth”), from Proto-Indo-European *h₃dónts (“tooth”). Cognate with West Frisian tosk ("tooth"), Icelandic toskur ("a tusk, tooth") (whence the Old Norse and Icelandic Ratatoskr and Ratatoskur respectively), Gothic  (tunþus, "tooth") and  (tundi, "thorn, tooth"). More at tooth.

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