1. a composition, as of lime or gypsum, sand, water, and sometimes hair or other fiber, applied in a pasty form to walls, ceilings, etc., and allowed to harden and dry.
  2. powdered gypsum.
  3. plaster of Paris.
  4. a solid or semisolid preparation spread upon cloth, plastic, or other material and applied to the body, especially for some healing purpose.

verb (used with object)

  1. to cover (walls, ceilings, etc.) with plaster.
  2. to treat with gypsum or plaster of Paris.
  3. to lay flat like a layer of plaster.
  4. to daub or fill with plaster or something similar.
  5. to apply a plaster to (the body, a wound, etc.).
  6. to overspread with something, especially thickly or excessively: a wall plastered with posters.
  7. Informal.
    1. to defeat decisively; trounce; drub.
    2. to knock down or injure, as by a blow or beating.
    3. to inflict serious damage or injury on by heavy bombing, shelling, or other means of attack.


  1. a mixture of lime, sand, and water, sometimes stiffened with hair or other fibres, that is applied to the surface of a wall or ceiling as a soft paste that hardens when dry
  2. British, Australian and NZ an adhesive strip of material, usually medicated, for dressing a cut, wound, etc
  3. short for mustard plaster, plaster of Paris


  1. to coat (a wall, ceiling, etc) with plaster
  2. (tr) to apply like plastershe plastered make-up on her face
  3. (tr) to cause to lie flat or to adhere
  4. (tr) to apply a plaster cast to
  5. (tr) slang to strike or defeat with great force

n.late Old English plaster “medicinal application,” from Vulgar Latin plastrum, shortened from Latin emplastrum “a plaster” (in the medical as well as the building sense), from Greek emplastron “salve, plaster” (used by Galen instead of more usual emplaston), noun use of neuter of emplastos “daubed on,” from en- “on” + plastos “molded,” from plassein “to mold” (see plasma). The building construction material is first recorded in English c.1300, via Old French plastre, from the same source, and in early use the English word often had the French spelling. v.“to coat with plaster,” early 14c., from plaster (n.) and partly Old French plastrier “to cover with plaster” (Modern French plâtrer), from plastre (see plaster (n.). Related: Plastered; plastering. Figurative use from c.1600. Meaning “to bomb (a target) heavily” is first recorded 1915. Sports sense of “to defeat decisively” is from 1919. n.

  1. Plaster of Paris.
  2. A pastelike mixture applied to a part of the body for healing or cosmetic purposes.

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