(rarely used) the Imperial (English) unit of mass that accelerates by 1 foot per second squared (1 ft/sΒ²) when a force of one pound-force (lbf) is exerted on it.
An accessory to a diesel-electric locomotive, used to increase adhesive weight and allow full power to be applied at a lower speed. It has trucks with traction motors but lacks a prime mover.
A piece of type metal imprinted by a linotype machine; also a black mark placed in the margin to indicate an error; also said in application to typewriters; type slug.