A pronged connecting device which fits into a mating socket, especially an electrical one. • An electric socket: wall plug. • Any piece of wood, metal, or other substance used to stop or fill a hole. • A flat oblong cake of cured and pressed tobacco; the tobacco that constitutes it. • A high, tapering silk hat. • A worthless horse. • Any worn-out or useless article. • A book that fails to sell. • A block of wood let into a wall to afford a hold for nails. • A promotion (act of promoting) of a product (such as a book, film or play) or other thing, concept, etc, for example during an interview or a commercial. • A body of once molten rock that hardened in a volcanic vent. Usually round or oval in shape. • A type of lure consisting of a rigid, buoyant or semi-buoyant body and one or more hooks. • A small seedling grown in a tray from expanded polystyrene or polythene filled usually with a peat or compost substrate. • A growth of protoplasm that closes the pore openings in the cells of certain algae. • A short cylindrical piece of jewellery commonly worn in larger-gauge body piercings, especially in the ear. • A drug dealer. • A trusted connection; someone who provides illicit goods and resources. • A branch from a water-pipe to supply a hose. • A standard, modular fuselage component that can be added or removed. • Ellipsis of spark plug. • Ellipsis of fireplug (“fire hydrant”).