Verb
1. deliver by singing;
"Sing Christmas carols"2. produce tones with the voice;
"She was singing while she was cooking""My brother sings very well"3. to make melodious sounds;
"The nightingale was singing"4. make a whining, ringing, or whistling sound;
"the kettle was singing""the bullet sang past his ear"5. divulge confidential information or secrets;
"Be careful--his secretary talks"