lounge (n.)youdaoicibaDictYouDict[lounge 词源字典]
"comfortable drawing room," 1881, from lounge (v.); in the sense of "couch on which one can lie at full length," it is attested from 1830. Lounge lizard is by 1917, perhaps from 1912, a term of contempt, originally in reference to men who hung around in tea rooms to flirt.[lounge etymology, lounge origin, 英语词源]