plaster
plas·ter / ˈplastər/ • n. 1. a soft mixture of lime with sand or cement and water for spreading on walls, ceilings, or other structures to form a smooth hard surface when dried. ∎ (also plaster of Paris) a hard white substance made by the addition of water to powdered and partly dehydrated gypsum, used for holding broken bones in place and making sculptures and casts. ∎ the powder from which such a substance is made.2. dated a bandage on which a poultice or liniment is spread for application. See mustard plaster. ∎ Brit. an adhesive strip of material for covering cuts and wounds.• v. [tr.] cover (a wall, ceiling, or other structure) with plaster. ∎ (plaster something with/in) coat or cover something with (a substance), esp. to an extent considered excessive: a face plastered in heavy makeup. ∎ [tr.] make (hair) lie flat by applying a liquid to it: his hair was plastered down with water. ∎ apply a plaster cast or medical plaster to (a part of the body). ∎ (plaster something with) cover a surface with (large numbers of pictures or posters): the store windows are plastered with posters. ∎ (plaster something over) present a story or picture conspicuously and sensationally in (a newspaper or magazine): her story was plastered all over the December issue. ∎ inf., dated bomb or shell (a target) heavily.DERIVATIVES: plas·ter·y adj.