coaster
/ˈkoʊstər/
noun
- A small flat object, often made of cork, wood, or plastic, placed under a glass or cup to protect a table surface.
- Please use a coaster so you don't leave a ring on the table.
- She bought a set of coasters with pictures of famous landmarks.
- I put my coffee mug on a coaster to protect the wood.
- A person or thing that coasts, especially a vehicle or rider moving without power.
- The sled is a fast coaster on the snowy hill.
- He's a coaster in class—he never studies but still gets average grades.
- The old bicycle was a good coaster once we reached the top of the hill.
Synonyms