plaster cast
noun [ C ] uk/ˌplɑː.stə ˈkɑːst/ us/ˌplæs.tɚ ˈkæst/
(also cast)（熟石膏制成的）石膏绷带，石膏夹
a covering made of plaster of Paris that is put around part of someone's body, forming a hard case to protect them while a broken bone repairs itself
石膏模型
a copy of a statue or similar object, made of plaster of Paris