coaster

noun

coast·​er ˈkō-stər 

1

: one that coasts: such as

a

: a person engaged in coastal traffic or commerce

b

: a ship sailing along a coast or engaged in trade between ports of the same country

2

: a resident of a seacoast

3

a

: a tray or decanter stand usually of silver and sometimes on wheels

b

: a shallow container or a plate or mat to protect a surface

4

a

: a small vehicle (such as a sled or wagon) used in coasting

b

: roller coaster

Examples of coaster in a Sentence

Set the glass on a coaster.

Recent Examples on the Web

Music lovers with get a kick out of these nostalgic drink coasters, complete with a mini record player to hold the coasters. —Dorian Smith-Garcia, Parents, 14 Nov. 2025

Go snow tubing or ice skating, or hop onto the Ridge Runner mountain coaster or the Canopy Climb Net Adventure. —Stephanie Stephens, USA Today, 13 Nov. 2025

For the person who’s in charge of the aux card, these vinyl coasters will get a giggle (and will probably get stolen, too). —Francesca Krempa, StyleCaster, 11 Nov. 2025

The water coaster, which joins favorites like Brain Drain, Pirates Plunge and Black Thunder, is touted as the largest ride in Rapids’ 46-year history. —Howard Cohen, Miami Herald, 7 Nov. 2025

Word History

First Known Use

1574, in the meaning defined at sense 1

Phrases Containing coaster

• coaster brake
• coaster wagon
• roller coaster

Rhymes for coaster

• poster
• roaster
• toaster
• paternoster

Kids Definition

coaster

noun

coast·​er ˈkō-stər 

1

: one that coasts

especially : a ship engaged in coastal trade

2

a

: a round tray usually of silver and sometimes on wheels

b

: a shallow container or a plate or a mat to protect a surface

3

: a small vehicle (as a sled or wagon) for coasting