sing

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. Music To utter a series of words or sounds in musical tones.
2. v. Music To vocalize songs or selections.
3. v. Music To perform songs or selections as a trained or professional singer.
4. v. Music To produce sounds when played: made the violin sing.
5. v. To make melodious sounds: birds singing outside the window.
6. v. To give or have the effect of melody; lilt.
7. v. To make a high whining, humming, or whistling sound.
8. v. To be filled with a buzzing or ringing sound.
9. v. To proclaim or extol something in verse.
10. v. To write poetry.
11. v. Slang To give information or evidence against someone.
12. v. Music To produce the musical sound of: sang a love song.
13. v. Music To utter with musical inflections: She sang the message.
14. v. Music To bring to a specified state by singing: sang the baby to sleep.
15. v. To intone or chant (parts of the Mass, for example).
16. v. To proclaim or extol, especially in verse: sang his praises.
17. n. Music A gathering of people for group singing.
18. sing out To call out loudly.

Century Dictionary and Cyclopedia

1. To utter words or inarticulate sounds in musical succession or with a tone that is musical in quality; chant: said of human beings.
2. Specifically, to intone.
3. To produce tuneful, musical, or rhythmical sounds: said of certain birds, beasts, and insects, and of various inanimate things: as, singing sands.
4. To give out a continuous murmuring, humming, buzzing, or whistling sound.
5. To cry out with pain or displeasure; squeal.
6. To compose verse; relate or rehearse something in numbers or verse.
7. To have the sensation of a continuous humming or ringing sound; ring.
8. To be capable of being sung; be adaptable to a musical setting.
9. Technically, an oscine passerine bird, whether it can sing or not; any member of the Oscines or Cantatores, many of which are songless.
10. To utter in musical sounds or with musical alternations of pitch; chant.
11. Specifically, to intone.
12. To celebrate with singing, or with some form of sound resembling singing; proclaim musically or resonantly; chant.
13. To frame, utter, or declaim in poetic form.
14. To celebrate in numbers or verse; describe or glorify in poetry.
15. To utter with enthusiasm; celebrate: as, to sing a person's praises on all occasions.
16. To usher in or out, attend on, or accompany with singing: as, to sing the old year out and the new year in.
17. To bring, send, force, or effect, as any end or change, by singing: as, to sing a child to sleep.
18. Synonyms To carol, warble, chant, hymn.
19. n. A singing; an entertainment of song.
20. n. An abbreviation of singular.

Wiktionary

1. v. intransitive To produce musical or harmonious sounds with one’s voice.
2. v. transitive To express audibly by means of a harmonious vocalization.
3. v. slang To confess under interrogation.
4. n. A gathering for the purpose of singing songs.

GNU Webster's 1913

1. v. To utter sounds with musical inflections or melodious modulations of voice, as fancy may dictate, or according to the notes of a song or tune, or of a given part (as alto, tenor, etc.) in a chorus or concerted piece.
2. v. To utter sweet melodious sounds, as birds do.
3. v. To make a small, shrill sound.
4. v. To tell or relate something in numbers or verse; to celebrate something in poetry.
5. v. obsolete To cry out; to complain.
6. v. To utter with musical inflections or modulations of voice.
7. v. To celebrate in song; to give praises to in verse; to relate or rehearse in numbers, verse, or poetry.
8. v. To influence by singing; to lull by singing.
9. v. To accompany, or attend on, with singing.

WordNet 3.0

1. v. to make melodious sounds
2. v. divulge confidential information or secrets
3. v. produce tones with the voice
4. v. deliver by singing
5. v. make a whining, ringing, or whistling sound