1. a soft mixture of lime, sand, and water that hardens when dry, used for covering walls and ceilings
2. a small adhesive bandage used to cover minor cuts or wounds
Usage: British
3. a hard white substance made from gypsum, used for making casts for broken bones
Usage: medical

1. to cover a wall or ceiling with plaster
2. to cover something thickly or completely

Examples

• The old plaster on the bedroom wall was cracking and needed repair.
• She put a plaster on her scraped knee.
• The doctor put his broken arm in a plaster cast.
• They hired workers to plaster the new walls.
• The child’s face was plastered with chocolate.
• Rain plastered her hair to her head.
• The workers will plaster the ceiling tomorrow.