Plaster

v. apply plaster, apply mortar; stick, glue; apply a cast; defeat (Slang)

n. mortar, wall covering made from lime; gypsum, cast; compress; bandage, band aid

Plaster of Paris, or simply plaster, is a type of building material based on calcium sulfate hemihydrate, nominally CaSO4·0.5H2O. It is created by heating gypsum to about 150 °C.2CaSO4·4H2O → 2CaSO4·H2O + 3H2O (released as steam). A large gypsum deposit at Montmartre in Paris is the source of the name. When the dry plaster powder is mixed with water, it re-forms into gypsum. Plaster is used as a building material similar to mortar or cement. Like those materials plaster starts as a dry powder that is mixed with water to form a paste, which then hardens. Unlike mortar and cement, plaster remains quite soft after drying, and can be easily manipulated with metal tools or even sandpaper. These characteristics make plaster suitable for a finishing, rather than a load-bearing material.
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Noun
1. a mixture of lime or gypsum with sand and water; hardens into a smooth solid; used to cover walls and ceilings
(hypernym) mixture
(hyponym) finish coat, finishing coat
(derivation) daub
2. any of several gypsum cements; a white powder (a form of calcium sulphate) that forms a paste when mixed with water and hardens into a solid; used in making molds and sculptures and casts for broken limbs
(synonym) plaster of Paris
(hypernym) calcium sulphate, calcium sulfate
(substance-meronym) gypsum
3. a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc.
(synonym) poultice, cataplasm
(hypernym) dressing, medical dressing
(hyponym) mustard plaster, sinapism
(derivation) poultice
4. a hardened surface of plaster (as on a wall or ceiling); "there were cracks in the plaster"
(synonym) plasterwork
(hypernym) surface
(hyponym) pargeting, pargetting, pargetry
(derivation) daub
5. adhesive tape used in dressing wounds
(synonym) adhesive plaster, sticking plaster
(hypernym) adhesive tape
(hyponym) court plaster
Verb
1. cover conspicuously, as by pasting something on; "The demonstrators plastered the hallways with posters"
(hypernym) cover
2. affix conspicuously; "She plastered warnings all over the wall"
(hypernym) affix, stick on
3. apply a plaster cast to; "plaster the broken arm"
(hypernym) cover
(derivation) plaster of Paris
4. apply a heavy coat to
(synonym) plaster over, stick on
(hypernym) cover
(derivation) plastering, daubing
5. coat with plaster; "daub the wall"
(synonym) daub
(hypernym) coat, surface
(hyponym) render-set
(verb-group) daub
(derivation) plasterwork
(classification) masonry
6. dress by covering with a therapeutic substance
(synonym) poultice
(hypernym) dress
(derivation) poultice, cataplasm
(classification) medicine, practice of medicine

n. plaster, Band-aid, adhesive bandage, court plaster, patch

(v. t.)
To overlay or cover with plaster, as the ceilings and walls of a house.
  

(v. t.)
To cover with a plaster, as a wound or sore.
  

(v. t.)
Fig.: To smooth over; to cover or conceal the defects of; to hide, as with a covering of plaster.
  

(n.)
Calcined gypsum, or plaster of Paris, especially when ground, as used for making ornaments, figures, moldings, etc.; or calcined gypsum used as a fertilizer.
  

(n.)
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.
  

(n.)
A composition of lime, water, and sand, with or without hair as a bond, for coating walls, ceilings, and partitions of houses. See Mortar.