Freebase(2.00 / 1 vote)Rate this definition: Proletariat. The proletariat is a term used to describe the class of wage-earners in a capitalist society whose only possession of significant material value is their labor; a member of such a class is a proletarian.
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Operation. In a set of double doors with automatic flush bolts, one of the doors is active and one is inactive. The active door is the door with the handle or push lever that opens the door. This is also the door with the dead bolt or other locking device.The inactive door is the door with the automatic flush bolts.olts are mechanisms that keep doors secure, and locked. Flush bolts are a particular type of bolt that is flush, or even, with the side of the door.