PIG, n. An animal (Porcus omnivorus) closely allied to the human race by the splendor and vivacity of its appetite, which, however, is inferior in scope, for it sticks at pig.
Source: The Devil's Dictionary, 1911.
-- Ambrose Bierce, (Jun 24 1842-1914), US journalist, short-story writer; He was a noted wit, satirist and sardonic short story writer who disappeared while covering the Mexican revolution.