bellows . ( Of the lat. )( follis ). 1. m. instrument to collect air and release it with a specific address, which is essentially reduced to a box with top and bottom of wood, flexible skin sides, a valve where enters the air and a canyon where it goes when folding the sides reduces the volume of the appliance. 2. m. leather of the Galician gaita bag. 3. m. wrinkle of clothing. 4. m. In the carriages, covered skin or waterproof fabric which, through a few rods of hier ro placed stretches and United by the bottom, extends to shelter from the Sun or rain, and folded toward the back when he wants to. 5. m. piece of skin or other foldable material placed on the sides of a bag, a portfolio, etc., to increase its capacity. 6. m. set of clouds left view on the mountains, and regularly are signs of wind. 7. m. Colloq. Respiratory capacity. 8. m. Colloq. Informer person. 9. m. Ast. Boto used in Mills for flour. 10. m. Colloq. Arg. and Ur. bandoneon.