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...
A rally of the trade union UNISON in Oxford during a strike in 2006. A labor union, or trade union, is an association of fair wage-earners uniting for the purpose of maintaining and improving the conditions of their employment. Over a three-hundred-year period, labor unions have developed into a number of forms, influenced by various political and economic regimes.