snarf (v.)

"eat hastily," 1960, U.S. teen slang, originally a noun meaning "food, meal" (1932), perhaps imitative, or from nautical slang scoff "eat hastily or voraciously, devour" which is attested from 1846 (compare U.S. tramps slang scoffing "food, something to eat," 1907). This is said to be a variant of scaff (by 1797) in the same sense, and scaff (n.) "food, provisions" is attested from 1768, but the group is of obscure origin. Perhaps the word comes ultimately from some survival of Old English sceorfan "to gnaw, bite" (see scarf (n.2)). South African scoff (n.) is said to be a colloquial representation of Dutch schoft "quarter of a day," hence "each of the meals of a day." Related: Scarfed; scarfing.