An air brake or, more formally, a compressed air brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to apply the pressure to the brake pad needed to stop the vehicle.
Define industrial union. industrial union synonyms, industrial union pronunciation, industrial union translation, English dictionary definition of industrial union. n. A labor union to which all the workers of a particular industry can belong regardless of their occupation or trade. n a labour organization in which all...
1 A union is an organization established by and for workers to pursue collective workplace goals: wages, benefits, work rules, power. 2  Unions arose after the Civil War as one response to modern industrial economy. 3  Unions grew rapidly from 1930s-50s, shrank from 1960s-present.