Old English spiwan "spew, spit," from Proto-Germanic *spiew- (source also of Old Saxon spiwan, Old Norse spyja, Old Frisian spiwa, Middle Dutch spijen, Dutch spuwen, Old High German spiwan, German speien, Gothic spiewan "to spit"), from PIE *sp(y)eu- "to spew, spit," probably ultimately of imitative origin (source also of Latin spuere; Greek ptuein, Doric psyttein; Old Church Slavonic pljuja, Russian plevati; Lithuanian spiauti). Also in Old English as a weak verb, speowan. Related: Spewed; spewing.

early 15c., originally Scottish and northern English, "a sudden flood, especially one caused by heavy rains or a snowmelt," of unknown origin. Perhaps from Old French espoit "flood," from Dutch spuiten "to flow, spout;" related to spout (v.). Figurative sense of "unusual quantity" is attested from 1610s.

1590s, "to spit with explosive sounds," cognate with Dutch sputteren, West Frisian sputterje, from Proto-Germanic *sput- (see spout (v.)). Related: Sputtered; sputtering. The noun is attested from 1670s.

"pipe conveying rainwater from a roof to the ground or a drain," by 1829, from down (adv.) + spout (n.).

also sand-spout, "pillar of sand raised like a waterspout by a whirlwind," 1849; see sand (n.) + spout (n.).

late 14c., "drainpipe," from water (n.1) + spout (n.). Meaning "whirlwind on open water" is recorded from 1738.