To produce musical sounds with the voice, especially words set to music. She loves to sing in the shower every morning.
(Of birds, animals, or objects) to emit a high-pitched or melodious sound. The kettle began to sing as the water reached boiling point.
To provide confidential or incriminating information, especially to law enforcement; to confess. Under pressure from the detectives, the accomplice finally sang and revealed the plan.
To confess or reveal incriminating information, especially to the police or authorities. Under pressure, the accomplice finally sang to the police.