lullaby lull • luller · · · Info · Definitions · Synonyms · Characters · · lullaby · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a quiet song intended to lull a child to sleep. Synonyms: cradlesong, berceuse. · · Noun Definition 1 (noun) the act of singing a quiet song to lull a child to sleep. Synonyms: cradlesong. · · Noun Definition 2 Synonyms · · · cradlesong · · Synonym 1 berceuse · · Synonym 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 l latin small letter l U+006C u latin small letter u U+0075 y latin small letter y U+0079