plaster cast
noun /ˈplɑːstə kɑːst/
  /ˈplæstər kæst/
 - (also cast)a case made of plaster of Paris that covers a broken bone and protects it(固定骨折部位的)管形石膏 - Her broken leg was put in a plaster cast.她骨折的腿上打着石膏。 
 
- Her broken leg was put in a plaster cast.
- a copy of something, made from plaster of Paris石膏模型 - They took a plaster cast of the teeth for identification purposes.他们做了这副牙的石膏模型作鉴别之用。 
 
- They took a plaster cast of the teeth for identification purposes.