plaster

noun

1. 1.

   A soft mixture of lime, sand, and water that hardens when dry, used for coating walls and ceilings.

2. 2.

   (plaster of Paris) A white powder that sets hard when mixed with water, used for casts and molds.

3. 3.

   (British) A small adhesive bandage for minor wounds.

4. 4.

   (as verb) To cover a surface with plaster.

5. 5.

   (as verb) To cover something thickly or extensively.