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

Kennywood Park The coaster's loading platform has had most of its decking replaced along with new signage, new automatic gates, and upgraded fencing. —Mike Darnay, CBS News, 17 Apr. 2026

The giant guitar in front of the indoor coaster’s building is being repainted. —Dewayne Bevil, The Orlando Sentinel, 16 Apr. 2026

The Coca-Cola branding printed on clothes, coasters and posters has variations in the languages and alphabets used in the design, made to be recognized whether someone is seeing it in Chicago, Dhaka or Casablanca. —Mariah Franklin, USA Today, 15 Apr. 2026

The trio of wooden coasters is worth the trip. —Brady MacDonald, Oc Register, 14 Apr. 2026

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