lounge (v.) Look up lounge at Dictionary.com
"to loll idly, act or rest lazily and indifferently, move indolently if at all," c. 1500, Scottish, a word of uncertain origin, perhaps [Barnhart] from French s'allonger (paresseusement) "to lounge about, lie at full length," from Old French alongier "lengthen," from Latin longus "long" (see long (adj.)). Another etymology traces it through obsolete lungis (n.) "slow, lazy person" (c. 1560), from Middle French longis, a generic application of Longinus, which was supposed to be the name of the centurion who pierced Christ's side with a spear in John xix:34. Popular etymology associated the name directly with long (adj.). Meaning "recline lazily" is from 1746. Related: Lounged; lounging.
lounge (n.) Look up lounge at Dictionary.com
1806 as "act of lounging;" 1830 as "couch on which one can lie at full length;" 1881 as "comfortable drawing room" (suitable for lounging); from lounge (v.). Earlier senses, now out of use, were "pastime" (1788), "place for gathering" (1775). Lounge lizard is by 1917, perhaps 1912, originally in reference to men who loitered in tea rooms to flirt.