snout n.

1550s, perhaps late 15c., "a quick, sudden bite or cut; an eager seizing," from snap (v.), or, if the earlier date, a noun from Dutch or Low German snappen "to snap," which are probably related to Middle Low German or Middle Dutch snavel "bill, beak," which Watkins traced to a hypothetical Germanic root *snu- forming words having to do with the nose, imitative of a sudden drawing of breath (see snout).

The sense of "quick movement" is recorded by 1630s; that of "something easily done" is 1877. The meaning "crispness, pithiness" is from 1865, American English (Scottish English had it by 1790 in an adjectival sense of "sharp, smart"). The meaning "brief or sudden spell" of weather (usually cold) is from 1740. The meaning "catch or fastener (of a purse, etc.) that closes with a snapping sound" is from 1815.

The card game name is attested from 1881, from a call used in the game. Meaning "a photographic snap-shot" is from 1894. U.S. football sense is from 1912, earlier it was snap-back (1880), which also was the name for the offensive center position. Slang snaps "handcuffs" is by 1895. Snap, Crackle and Pop, cartoon characters associated with Kellogg breakfast cereal Rice Krispies, are from 1940.

As an adjective (1790) commonly used to indicate instantaneous action, as in snap judgment (1841).

early 15c, snorten, earlier fnorten (late 14c.), "breathe heavily, expel air through the nose with a harsh sound, make the sound of a horse," probably related to snore (v.) or like it imitative of the sound made. The sense of "express contempt" is from 1818. The meaning "inhale cocaine" is attested by 1935. Related: Snorted; snorting.