What is the meaning of sing?

verb

• Deliver by singing.
  • usage: "Sing Christmas carols"
• Produce tones with the voice.
  • usage: "She was singing while she was cooking"; "My brother sings very well"
• To make melodious sounds.
  • usage: "The nightingale was singing"
• Make a whining, ringing, or whistling sound.
  • usage: "the kettle was singing"; "the bullet sang past his ear"
  • synonyms: whistle
• Divulge confidential information or secrets.
  • usage: "Be careful-his secretary talks"
  • synonyms: spill the beans, let the cat out of the bag, talk, tattle, blab, peach, babble, babble out, blab out