1. (noun)song, vocal a shortmusicalcomposition with words "a successful musical must have at least three good songs"
2. (noun)song a distinctive or characteristicsound "the song of bullets was in the air"; "the song of the wind"; "the wheels sang their song as the train rocketed ahead"
3. (noun)song, strain the act of singing "with a shout and a song they marched up to the gates"
4. (noun)birdcall, call, birdsong, song the characteristicsound produced by a bird "a bird will not learn its song unless it hears it at an early age"
5. (noun)song a very small sum "he bought it for a song"