cleaning shoe noun2 •The part of a harvester or combine which both sieves out large impurities such as rocks and blows out light impurities such as chaff.The cleaning shoe expels lightweight material known as chaff as well as material with intermediate aerodynamic properties, such as straw, from the back of the combine. — 2003 •A brake shoe used to clean a wheel.After every test (except those at 30 mph) the wheel was cleaned by making two stops with cleaning shoes from a speed of 40 miles per hour. — 1913 formscleaning shoes
