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

RailBlazer is a single-rail coaster. —Allison Palmer, Sacbee.com, 9 Mar. 2026

The indoor coaster ride through the dark is the centerpiece of the new Lego Galaxy themed land at Legoland California that includes the G-Force Test Facility spinning thrill ride and the Duplo Launch and Land helicopter ride. —Brady MacDonald, Oc Register, 6 Mar. 2026

Action comes fast, but surrounds guests, as the coaster cars rotate around a hurtling asteroid. —Todd Martens, Los Angeles Times, 6 Mar. 2026

Now both are being lumped together by critics as east coasters. —Kayla Dwyer, IndyStar, 5 Mar. 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