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...
Trade Union Definition: 1  It must be formally in existence with a constutition and a defined membership; 2  It must have as a stated purpose, the collective representation of the group of employees in regards to the common employer; and. 3  It must not be dominated by the employer.