Bombardo \Bom*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.
[1913 Webster]