Etymology
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loll (v.)
mid-14c., lollen "to lounge idly, hang loosely;" late 14c., "rest at ease" (intransitive), a word of uncertain origin; perhaps related to Middle Dutch lollen "to doze, mumble," or somehow imitative of rocking or swinging. Specifically of the tongue from 1610s. Also in extended form lollop (1745). Related: Lolled; lolling. As a noun, from 1709. Lollpoop "A lazy, idle drone" ("Dictionary of the Vulgar Tongue") is from 1660s.
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lollipop (n.)
1784, lolly-pops "soft candy, coarse sweetmeat made of treacle and sugar, usually with butter and flour added," a word "of obscure formation" [OED]. The elements are perhaps related to loll (v.) "to dangle" (the tongue) + pop "a strike, slap." Or the first element may be northern dialectal lolly "the tongue." Figurative sense of something sweet but unsubstantial is by 1849. Meaning "hard candy on a stick" is from 1920s.
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lounge (v.)
c. 1500, "to loll idly, act or rest lazily and indifferently, move indolently if at all," Scottish, a word of uncertain origin. Meaning "recline lazily" is from 1746. Perhaps [Barnhart] it is 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 the obsolete noun lungis "slow, lazy person" (c. 1560), which is from French longis "an idle, stupid dreamer," a special application, for some obscure reason, in Old French of the proper name Longis, which is from Latin Longius, Longinus. In old mystery plays and apocryphal gospels, Longinus is the name of the centurion who pierces Christ's side with a spear; the name perhaps was suggested by Greek longe "a lance" in John xix.34. But popular etymology associated the name directly with long (adj.). Related: Lounged; lounging; lounger.
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lolly (n.)
short for lollipop, 1854. Also, in mid-20c. British slang, "money."
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lollapalooza (n.)
also lallapaloosa, lallapalootza, etc.; "remarkable or wonderful person or thing," 1901, American English, fanciful formation. The annual North American alternative pop music concert of the same name dates from 1991.
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lollygag (v.)
"dawdle, dally," 1862, lallygag, American English, perhaps from dialectal lolly "tongue" + gag "deceive, trick." Related: Lollygagged; lollygagging.
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