noun
A device for moving or compressing air, such as a bicycle pump or an aquarium air pump.
自転車のタイヤに空気ポンプで空気を入れた。
I pumped air into the bicycle tire with an air pump.
A general pump for liquids or gases; 空気ポンプ specifically refers to an air pump.
Compound of 空気 (くうき, 'air') and ポンプ ('pump'), a straightforward loanword compound.