Emily Dickinson Lexicon

LAS-CIV'I-OUS, a. [Fr. lascif; It. and Sp. lascivo; from L. lascivus, from laxus, laxo, to relax, to loosen. Class Lg.]

1. Loose; wanton; lewd; lustful; as, lascivious men; lascivious desires; lascivious eyes. – Milton.
2. Soft; wanton; luxurious. He capers nimbly in a lady's chamber, / To the lascivious pleasing of a lute. – Shak.