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

Rather than cleaning your countertops to get rid of soap scum and stains from hard water, these coasters maintain a fresh, clean look every day. —Caley Sturgill, Southern Living, 23 Jan. 2026

Soon WeatherTech was selling indoor mats for kitchens and bathrooms, boot trays, coasters, tablet holders and even stainless steel pet bowls. —Monica Hunter-Hart, Forbes.com, 21 Jan. 2026

Montezooma’s Revenge continues to undergo major renovations in Fiesta Village that will transform the historic flywheel launch coaster with a new randomized launch sequence. —Brady MacDonald, Oc Register, 21 Jan. 2026

The new coaster will replace Hollywood Rip Ride Rockit, which was located toward the front of Universal Studios Florida and closed in 2025. —Eve Chen, USA Today, 20 Jan. 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