make musical sounds with the voice, especially words with a set tune

Bella sang to the baby

make a high-pitched whistling or buzzing sound

the kettle was beginning to sing

act as an informer to the police

as soon as he got put under pressure, he sang like a canary

recount or celebrate in poetry or other literature

poetry should sing the variety of the human race

these poets sing of the American experience

an act or spell of singing

we asked him to come back and have a bit of a sing

a sponsored sing to pay for the theatre