n. A traditional or fabulous animal, with a single long horn, the monoceros of classic writers, commonly described as a native of India, but in terms not certainly applicable to any known animal.n. A mistranslation in the authorized version of the Bible (Deut. xxxiii. 17, and elsewhere) of the Hebrew word re'ēm.n. In heraldry, the representation of the fabulous animal used as a bearing.n. The unicorn-fish, unicorn-whale, sea-unicorn, or narwhal, whose enormously long single incisor tooth projects like a horn. See Monodon, monoceros, 3.n. The kamichi or horned screamer, Palamedea cornuta; the unicorn-bird. N. Grew. See cut under Palamedea.n. A kind of beetle having a single long horn; a unicorn-beetle. Various large beetles literally answer to this definition, being unicornous, with a large single prothoracic horn. See Dynastes, elephant-beetle, Hercules-beetle.n. In conchology, a unicorn-shell. See cut under Monoceros.n. A pair of horses with a third horse in front; also, the whole equipage.n. A Scottish gold coin issued by James III., James IV., and James V., having the figure of a unicorn on the obverse. Its standard weight was 58.89 grains troy, and it was current for 23 shillings Scotch.n. [capitalized] In astronomy, the constellation Monoceros.