Meanings
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1
noun
a quiet, soothing song sung to help a baby or young child fall asleep
She sang the baby the same lullaby every night.
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2
verb
to soothe or sing to someone with a lullaby
The nurse lullabied the restless child to sleep.
Thesaurus
Etymology
Recorded in the sixteenth century, from the verb lull, 'to soothe to sleep,' plus bye, as in the repeated soothing sounds of bye-bye. It replaced or developed from earlier cradle-song expressions and can also function as a verb meaning 'to sing or soothe with a lullaby.'