noun / verb
lullaby
LUL-uh-bye/ˈlʌləbaɪ/
A soothing song used to help someone fall asleep.
He sings a soft lullaby as his baby's eyes close.

Etymology
The nursery refrain lullay and the soothing sound by became a name for the song itself. By may have been merely a meaningless extension of the refrain.
In context
relax and go to sleep. >> It's entirely counterproductive. >> no sense. >> No. >> Butterfield wanted to replace that acoustic fire alarm with something resembling a gentle acoustic lullaby.
More examples
- My grandmother knows dozens of lullabies by heart.
- The familiar lullaby helps me drift off to sleep.
- She lullabies the baby to sleep with a gentle tune.
Forms
lullaby · lullabies · lullabied · lullabying
Similar words
- cradle song
- Specifically names a lullaby sung to a baby.