Any of many gastropod mollusks, having no (or only a rudimentary) shell. • A slow, lazy person; a sluggard. • A bullet or other projectile fired from a firearm; in modern usage, generally refers to a shotgun slug. • A solid block or piece of roughly shaped metal. • A counterfeit coin, especially one used to steal from vending machines. • A shot of a drink, usually alcoholic. • A title, name or header, a catchline, a short phrase or title to indicate the content of a newspaper or magazine story for editing use. • The imperial (English) unit of mass that accelerates by 1 foot per second squared (1 ft/s²) when a force of one pound-force (lbf) is exerted on it. • A discrete mass of a material that moves as a unit, usually through another material. • A motile pseudoplasmodium formed by amoebae working together. • 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, being powered by electricity from the mother locomotive, and may or may not have a control cab. • A black screen used to separate broadcast items. • 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. • A stranger picked up as a passenger to enable legal use of high occupancy vehicle lanes. • A hitchhiking commuter. • The last part of a clean URL, the displayed resource name, similar to a filename. • A hindrance, an obstruction. • A ship that sails slowly. • A block of text at the beginning of a scene that sets up the scene's location, characters, etc. • An infertile egg of a reptile.