Origin: French suffix -ier
Bombardier has 5 different meanings across 2 categories:
a noncommissioned officer in the British artillery
the member of a bomber crew responsible for using the bombsight and releasing the bombs on the target
A bomber crew member who sights and releases bombs.
An enclosed passenger vehicle, propelled over snow and ice by caterpillar tracks and steered by skis, whose actual original product name was Auto-Neige™/Snowmobile™, made by Bombardier Ltée.
A surname, from French.