имя существительное 1) колыбельная (песня) 2) мягкие, успокаивающие звуки
I. noun (plural -bies) Etymology: obsolete English lulla, interjection used to lull a child (from Middle English) + bye, interjection used to lull a child, from Middle English by a soothing refrain; specifically a song to quiet children or lull them to sleep II. transitive verb (-bied; -bying) to quiet with or as if with a lullaby