- Military. the member of a bombing plane crew who operates the bombsight and bomb-release mechanism.
- History/Historical. artilleryman.
- a snowmobilelike vehicle driven by an internal-combustion engine, equipped with caterpillar tracks at the rear, steered by skis at the front, and designed for travel over snow.
- the member of a bomber aircrew responsible for aiming and releasing the bombs
- British a noncommissioned rank below the rank of sergeant in the Royal Artillery
- Also called: bombardier beetle any of various small carabid beetles of the genus Brachinus, esp B. crepitans of Europe, which defend themselves by ejecting a jet of volatile fluid
- trademark Canadian a snow tractor, typically having caterpillar tracks at the rear and skis at the front
1550s, soldier with a bombard, from French bombardier, from bombard (see bombard (n.)). In 17c.-18c. of soldiers who manned artillery (especially mortars and howitzers); meaning “one who aims the bombs in an aircraft” is attested 1932, American English.