siphon (n.)youdaoicibaDictYouDict[siphon 词源字典]
late 14c., from Latin sipho (genitive siphonis) "a siphon," from Greek siphon "pipe, tube for drawing wine from a cask," of unknown origin. Related: Siphonal.[siphon etymology, siphon origin, 英语词源]
siphon (v.)youdaoicibaDictYouDict
1859, from siphon (n.). Figurative sense of "to draw off, divert" is recorded from 1940. Related: Siphoned; siphoning.