Definition of Lullaby

a gentle song sang quietly to put a child to sleep

Examples of Lullaby in a sentence

The infant’s mother sang her Hush Little Baby every night, so it quickly became the child’s favorite lullaby.  🔊

Humming the sweet lullaby as she rocked her little one, Megan tried to remember all of the words to Twinkle Twinkle Little Star.  🔊

My little sister can’t go to sleep unless someone lays with her and sings a lullaby softly in her ear.  🔊

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