BombardoBom*bar"do\, Bombardon \Bom*bar"don\, n. [It. bombardo.] (Mus.) Originally, a deep-toned instrument of the oboe or bassoon family; thence, a bass reed stop on the organ. The name bombardon is now given to a brass instrument, the lowest of the saxhorns, in tone resembling the ophicleide. --Grove.