n.1 esp. US variety entertainment.
2 a stage play on a trivial theme with interspersed songs.
3 a satirical or topical song with a refrain.
Derivatives:
vaudevillian adj. & n.
Etymology: F, orig. of convivial song esp. any of those composed by O. Basselin, 15th-c. poet born at Vau de Vire in Normandy