Pronunciation: (lul'u-bī"), [key]
—n., pl. -bies,
—v., -bied, -by•ing.
1. a song used to lull a child to sleep; cradlesong.
2. any lulling song.
to lull with or as with a lullaby.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.