kɔːstər

Definitions

1. noun

A car or other vehicle that runs on a rail or a track, typically in a park or at an amusement park, and is powered by gravity, usually by going down an inclined track.

“The kids loved riding the roller coaster at the amusement park.”

2. noun

A device or track that carries or guides something, especially a moving part of a machine.

“The engine’s parts included a number of coasters that reduced friction.”

3. verb

to travel or move easily and quickly, especially downward.

“The ball coastered down the hill, picking up speed.”

4. verb

to reduce or eliminate momentum, especially by applying a brake.

“The driver had to coaster the car to avoid a collision.”