I. ˈlə-lə-ˌbī 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
Date: 1573
: a soothing refrain ; specifically : a song to quiet children or lull them to sleep
II. transitive verb
( -bied ; -by·ing )
Date: 1576
: to quiet with or as if with a lullaby