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DictionaryplasterHardening material
noun / verb

plaster

PLAS-ter/ˈplæstər/

A soft mixture that hardens into a rigid covering.

A worker spreads wet plaster across an unfinished wall with a trowel.

A plasterer spreads thick wet plaster onto an unfinished interior wall with a steel trowel; the wall transitions visibly from rough substrate through fresh ridged material to a smooth coating.
Etymology
plasterLatinplaster

Latin plastrum ultimately belongs to a family of words meaning “daubed on.” That image fits the building material spread wet over a wall to form a coating.

In context

ArtBLOCK2:12
artists mix pigments with water and apply it to the wet lime plaster creating a permanent bond with the wall
Fresco Paintings | ArtBlock

More examples

  • We mix the plaster with water until it becomes smooth.
  • The plaster hardens into a firm shell around the broken arm.
  • They plaster the ceiling before painting it.

Forms

plaster · plasters · plastered · plastering

plasterer noun — A worker who coats surfaces with plaster.

Similar words

stucco
Typically coats exterior walls and has a rougher, textured finish.
spackle
Fills small holes and cracks rather than coating whole walls.