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...
Labor Unions. A labor union is a third-party organization that acts as liaison between workers and the management of the companies that hire them. Labor unions commonly represent workers who perform manual labor, such as factory workers and janitors, but they can also represent teachers and other educated workers.