2. A composition of lime, water, and sand, with or without
hair as a bond, for coating walls, ceilings, and
partitions of houses. See {Mortar}.
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.
{Plaster cast}, a copy of an object obtained by pouring
plaster of Paris mixed with water into a mold.
{Plaster of Paris}. [So called because originally brought
from a suburb of Paris.] (Chem.) Anhydrous calcium
sulphate, or calcined gypsum, which forms with water a
paste which soon sets or hardens, and is used for casts,
moldings, etc. The term is loosely applied to any plaster
stone or species of gypsum.
{Plaster of Paris bandage} (Surg.), a bandage saturated with
a paste of plaster of Paris, which on drying forms a
perfectly fitting splint.