noun

lullaby

lullaby, cradle song

She sang a soft lullaby to her baby.

She sang a soft lullaby to her baby.

((a/the)) lullaby a song to help a baby sleep She sang a soft lullaby to her baby.

Synonyms: cradle song, berceuse

From Middle English 'lullen' (to soothe) and 'by' (as in 'by-by'), a sound used to put a child to sleep.

Think of the sound 'la la la' used to 'lull' a baby to sleep. The 'by' at the end sounds like 'bye-bye sleep time'.

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