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Definition of plaster:

  1. A composition of lime, water, and sand, with or without hair as a bond, for coating walls, ceilings, and partitions of houses. See Mortar.
  2. An external application of a consistency harder than ointment, prepared for use by spreading it on linen, leather, silk, or other material. It is adhesive at the ordinary temperature of the body, and is used, according to its composition, to produce a medicinal effect, to bind parts together, etc.; as, a porous plaster; sticking plaster.
  3. Calcined gypsum, or plaster of Paris, especially when ground, as used for making ornaments, figures, moldings, etc.; or calcined gypsum used as a fertilizer.
  4. Fig.: To smooth over; to cover or conceal the defects of; to hide, as with a covering of plaster.
  5. To cover with a plaster, as a wound or sore.
  6. To overlay or cover with plaster, as the ceilings and walls of a house.


bitumen, cast, compress, affix, caulk, imitation, bandage, sticking plaster, adobe, stick on, asbestos, poultice, go to press, put on, cement, blanket, wax, recover, bind, wrap, board over, dab, plaster of Paris, ice, cane, print, cataplasm, besmear, corset, brick, crown, adhesive plaster, cover, aggregate, sham, carry, Band-Aid, smother, publish, splash, carpet, report, collar, bedaub, bury, smear, lath and plaster, plastered, brownstone, tile, boarding, cotton ball, run, braces, varnish, put out, coat, smudge, board, plaster over, insulate, cotton, beplaster, cardboard, daub, top, break, paper, serialize, plate, smirch, face, plasterwork.

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