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

Other California coasters that have been bestowed ACE Landmark status include Matterhorn Bobsleds at Disneyland, New Revolution at Six Flags Magic Mountain, Montezooma’s Revenge at Knott’s Berry Farm and Giant Dipper at Santa Cruz Beach Boardwalk. —Brady MacDonald, Oc Register, 15 June 2026

Looking ahead Beyond the fidgets that make up the majority of their inventory, Victoria Essie Studio still sells an assortment of earrings and homewares like trinket dishes and coasters. —Jennifer Liu valentina Duarte, CNBC, 14 June 2026

Groundwork for the coaster can already be seen outside the park so that wasn’t a complete surprise to industry observers. —Caroline Reid, Forbes.com, 13 June 2026

Use cutting boards, trivets, and coasters. —Daley Quinn, Southern Living, 9 June 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