Meaning ofcoasterin English

Noun

1. a ship operating between domestic ports
2. a coastal sailor or pilot; navigates coastal waters
3. a tray-like object protecting surfaces from spills
   She placed a coaster under her drink to protect the table.
4. a thrilling amusement park ride (rollercoaster)
   The rollercoaster at the amusement park was a thrilling experience.
5. a person sliding on ice or snow (recreational); sledder
   Children laughed as they sped down the hill on their coaster sleds.
6. one succeeding with minimal effort
   He was a coaster who managed to pass the exam without much studying.