Breadcrumb Home > Dictionary > Index L lullaby: Meaning and Definition of Find definitions for: lull•a•by Pronunciation: (lul'u-bī"), [key] — n., pl. v., -bies, -bied, -by•ing. —n. a song used to lull a child to sleep; cradlesong. any lulling song. —v.t. to lull with or as with a lullaby. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lullaby (Thesaurus) lull Lully TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: insitu Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language