spittoon (n.)youdaoicibaDictYouDict[spittoon 词源字典]
also spitoon, 1811, American English, from spit (n.1) + -oon. A rare instance of a word formed in English using this suffix (octoroon is another). Replaced earlier spitting box (1680s).[spittoon etymology, spittoon origin, 英语词源]