What does "bombardon" mean?

A brass instrument, the bass version of the tuba.

What is a synonym for "bombardon"?

Common synonyms include: bass brass, bombard, helicon, low brass, tuba.

noun

noun ·Rare ·Advanced level

Noun

1
A brass instrument, the bass version of the tuba.
2
a large shawm; the bass member of the shawm family wordnet
3
A bass instrument of the shawm family
4
a tuba that coils over the shoulder of the musician wordnet
5
An organ pedal stop at 32' pitch which imitates the sound of the above mentioned instruments.

From French bombardon, from Italian bombardone.