1.PMPBOthe person on a military aircraft who is responsible for dropping bombs 〔战机上的〕轰炸员,投弹手
2.PMAa low rank in the British army 〔英国皇家炮兵〕下士
Examples from the Corpus
bombardier• A biochemist colleague has kindly provided me with a bottle of hydrogen peroxide, and enough hydroquinone for 50 bombardier beetles.• If you are curious about the bombardier beetle, by the way, what actually happens is as follows.• This is what the bombardier beetle does.• The bombardier beetle's ancestors simply pressed into different service chemicals that already happened to be around.• George A.. Ward, bombardier.
Originbombardier
(1900-2000)bombardier“soldier in charge of a gun”((16-20 centuries)), from French, from bombarde; → BOMBARD