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

Diesel asks at the top of the spot (below), which shows footage of riders speeding through a conceptual rendering of the coaster — featuring vehicles that rotate along a course that also includes three inversions. —Joey Nolfi, Entertainment Weekly, 8 Feb. 2026

The Breakfasters English Muffin Breakfast Sandwich The egg patty is as thin as a bar coaster and just as flavorful in this McDonald’s-esque sausage-egg McMuff. —Alex Beggs, Bon Appetit Magazine, 7 Feb. 2026

The park’s two existing coasters include the 2004 Revenge of the Mummy indoor coaster and the 2016 Flight of the Hippogriff outdoor kiddie coaster. —Brady MacDonald, Oc Register, 5 Feb. 2026

The new coaster is on the site of the Flying School ride that was closed in August 2023. —Dewayne Bevil, The Orlando Sentinel, 4 Feb. 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