say it: PLA-stur
plaster is a verb and noun meaning "apply a heavy coat to". It carries 11 recorded senses.
apply a heavy coat to
a mixture of lime or gypsum with sand and water; hardens into a smooth solid; used to cover walls and ceilings
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
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.
a surface of hardened plaster (as on a wall or ceiling)
“there were cracks in the plaster”
adhesive tape used in dressing wounds
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for plaster come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.