noun
air pump; bicycle pump
A pump for inflating tires, balls, or other inflatables. Often refers to a hand-operated bicycle pump.
自転車のタイヤに空気入れで空気を入れた。
I pumped air into the bicycle tire with a pump.
ボールがぺちゃんこだから、空気入れを貸して。
The ball is flat, so lend me the pump.