lullaby

A soothing song with which to lull a child to sleep.

To quiet with or as if with a lullaby.

To lull to sleep; hush with a lullaby.

A song sung to lull children to sleep; a cradle-song.

A cradle-song, or an instrumental piece in the style of a cradle-song; a berceuse.

Hence Good night; good-by.

A song to quiet babes or lull them to sleep; that which quiets.

Hence: Good night; good-by.

A soothing song to lull children to sleep.

the act of singing a quiet song to lull a child to sleep