'Bombardon' definitions:

Definition of 'bombardon'

From: WordNet
noun
A tuba that coils over the shoulder of the musician [syn: helicon, bombardon]
noun
A large shawm; the bass member of the shawm family [syn: bombardon, bombard]

Definition of 'Bombardon'

From: GCIDE
  • 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]