—n. Also called bebop. early modern jazz developed in the early 1940s and characterized by often dissonant triadic and chromatic chords, fast tempos and eccentric rhythms, intricate melodic lines punctuated by pop-tune phrases, and emphasizing the inventiveness of soloists. Cf. cool jazz, hard bop, modern jazz, progressive jazz.
—v.i. Slang.to move, go, or proceed (often fol. by on down): Let's bop on down to the party.