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

Ahead of the announcement, Yuengling rolled out a teaser campaign with billboards, coasters and commercial spots hinting at its expansion. —Rachel Bernhard, jsonline.com, 1 Dec. 2025

Take the time to check out the caps, coasters, beach towels and bags at the Walls’ new shop. —Jane Wooldridge, Miami Herald, 1 Dec. 2025

Always put coasters under glasses, particularly those containing alcohol or citrus juices, and place hot dishes on trivets. —Caitlin Sole, Better Homes & Gardens, 28 Nov. 2025

This upholstered ottoman opens to reveal ample storage inside, and this lift-top coffee table is ideal for concealing remote controls, coasters, and other small items. —Rachel Trujillo, PEOPLE, 26 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