BOMBARDON

bombardon, bombard

(noun) a large shawm; the bass member of the shawm family

helicon, bombardon

(noun) a tuba that coils over the shoulder of the musician

Source: WordNet® 3.1

Etymology

Noun

bombardon (plural bombardons)

(musical instrument) A brass instrument, the bass version of the tuba.

(musical instrument) A bass instrument of the shawm family

A organ pedal stop at 32' pitch which imitates the sound of the above mentioned instruments.

Source: Wiktionary

Bom*bar"do, Bom*bar"don, n. Etym: [It. bombardo.] (Mus.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition