bellows

n [pl] apparatus for driving air into or through sth, eg through the pipes of a church organ 风箱: a pair of bellows, ie two-handled bellows for blowing air into a fire 手用吹风器（俗称皮老虎）.

bell, bell captain, bell-bottomed, bell-bottoms, bell-buoy, bell-pull, bell-push, bell-ringer, bell-tent, bellboy, belle, belles-lettres, belletristic, bellhop, bellman, bellicose, bellicosity, belligerence, belligerent, belligerently, bellow, bellwether, belly, belly-button, belly-dance, belly-dancer, belly-flop, belly-laugh, bellyache, bellyful, belong, belong in, belong to, belonging, belongings, beloved, below, belt, belt line, belting, bemoan,