Pronunciation: (yOO'ni-kôrn"),[key] —n. 1. a mythical creature resembling a horse, with a single horn in the center of its forehead: often symbolic of chastity or purity.
2. a heraldic representation of this animal, in the form of a horse with a lion's tail and with a long, straight, and spirally twisted horn.
3. (cap.) Astron.the constellation Monoceros.
4. an animal mentioned in the Bible, Deut. 33:17: now believed by some to be a description of a wild ox or rhinoceros.
5. a former gold coin of Scotland, first issued by James III in 1486, having an obverse bearing the figure of a unicorn.