| 1. instrument with an air chamber for directing a current of air (usually upon a fire). bellowsbellows , n. sing. & pl. [oe. bely, below, belly, bellows, as. b?lg, b?lig, bag, bellows, belly. bellows is prop. a pl. and the orig. sense is bag. see: belly.] an instrument, utensil, or machine, which, by alternate expansion and contraction, or by rise and fall of the top, draws in air through a valve and expels it through a tube for various purposes, as blowing fires, ventilating mines, or filling the pipes of an organ with wind.bellows camera, in photography, a form of camera, which can be drawn out like an accordion or bellows |
