Unicorn \U"ni*corn\, n. [OE. unicorne, F. unicorne, L. unicornis one-horned, having a single horn; unus one + cornu a horn; cf. L. unicornuus a unicorn. See One, and Horn.]

1. A fabulous animal with one horn; the monoceros; -- often represented in heraldry as a supporter. [1913 Webster]

2. A two-horned animal of some unknown kind, so called in the Authorized Version of the Scriptures. [1913 Webster]

Canst thou bind the unicorn with his band in the furrow? --Job xxxix. 10. [1913 Webster]

Note: The unicorn mentioned in the Scripture was probably the urus. See the Note under Reem. [1913 Webster]

3. (Zool.)
   (a) Any large beetle having a hornlike prominence on the head or prothorax.
   (b) The larva of a unicorn moth. [1913 Webster]

4. (Zool.) The kamichi; -- called also unicorn bird. [1913 Webster]

5. (Mil.) A howitzer. [Obs.]

[1913 Webster]

Fossil unicorn, or Fossil unicorn's horn (Med.), a substance formerly of great repute in medicine; -- named from having been supposed to be the bone or the horn of the unicorn.

Unicorn fish, Unicorn whale (Zool.), the narwhal.

Unicorn moth (Zool.), a notodontian moth (Coelodasys unicornis) whose caterpillar has a prominent horn on its back; -- called also unicorn prominent.

Unicorn root (Bot.), a name of two North American plants, the yellow-flowered colicroot (Aletris farinosa) and the blazing star (Chamaelirium luteum). Both are used in medicine.

Unicorn shell (Zool.), any one of several species of marine gastropods having a prominent spine on the lip of the shell. Most of them belong to the genera Monoceros and Leucozonia. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

154 Moby Thesaurus words for "unicorn": Argus, Briareus, Cerberus, Charybdis, Cyclops, Echidna, Gorgon, Harpy, Hydra, Loch Ness monster, Medusa, Minotaur, Pegasus, Python, Scylla, Sphinx, Talos, Typhon, achievement, alerion, animal charge, annulet, argent, armorial bearings, armory, arms, azure, bandeau, bar, bar sinister, baton, bearings, bend, bend sinister, billet, blazon, blazonry, bordure, broad arrow, cadency mark, canton, centaur, chaplet, charge, chevron, chief, chimera, coat of arms, cockatrice, coronet, crescent, crest, cross, cross moline, crown, device, difference, differencing, dragon, drake, eagle, equipage, ermine, ermines, erminites, erminois, escutcheon, falcon, fess, fess point, field, file, flanch, fleur-de-lis, four-in-hand, fret, fur, fusil, garland, griffin, gules, gyron, hatchment, helmet, heraldic device, hippocampus, honor point, impalement, impaling, inescutcheon, label, lion, lozenge, mantling, marshaling, martlet, mascle, mermaid, merman, metal, motto, mullet, nixie, nombril point, octofoil, ogre, ogress, or, ordinary, orle, pair, pale, paly, pean, pheon, purpure, quarter, quartering, randem, rig, roc, rose, sable, salamander, saltire, satyr, scutcheon, sea horse, sea serpent, shield, siren, span, spike, spike team, spread eagle, subordinary, tandem, team, tenne, three-up, tincture, torse, tressure, troll, turnout, vair, vampire, vert, werewolf, windigo, wreath, xiphopagus, yale, zombie

Source: Moby Thesaurus II by Grady Ward, 1.0
 

unicorn

Source: WordNet (r) 2.0
 

Unicorn \U"ni*corn\, n. [OE. unicorne, F. unicorne, L. unicornis one-horned, having a single horn; unus one + cornu a horn; cf. L. unicornuus a unicorn. See One, and Horn.]

1. A fabulous animal with one horn; the monoceros; -- often represented in heraldry as a supporter.

2. A two-horned animal of some unknown kind, so called in the Authorized Version of the Scriptures.

Canst thou bind the unicorn with his band in the furrow? --Job xxxix. 10.

Note: The unicorn mentioned in the Scripture was probably the urus. See the Note under Reem.

3. (Zo["o]l.)
   (a) Any large beetle having a hornlike prominence on the head or prothorax.
   (b) The larva of a unicorn moth.

4. (Zo["o]l.) The kamichi; -- called also unicorn bird.

5. (Mil.) A howitzer. [Obs.]

Fossil unicorn, or Fossil unicorn's horn (Med.), a substance formerly of great repute in medicine; -- named from having been supposed to be the bone or the horn of the unicorn.

Unicorn fish, Unicorn whale (Zo["o]l.), the narwhal.

Unicorn moth (Zo["o]l.), a notodontian moth (C[oe]lodasys unicornis) whose caterpillar has a prominent horn on its back; -- called also unicorn prominent.

Unicorn root (Bot.), a name of two North American plants, the yellow-flowered colicroot (Aletris farinosa) and the blazing star (Cham[ae]lirium luteum). Both are used in medicine.

Unicorn shell (Zo["o]l.), any one of several species of marine gastropods having a prominent spine on the lip of the shell. Most of them belong to the genera Monoceros and Leucozonia.

Source: Webster's Revised Unabridged Dictionary (1913)