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

Thus, in 2015, the coasters were born. —Kait Hanson, Southern Living, 11 Jan. 2026

Families will love Hiccup’s Wing Gliders in the Isle of Berk, a not-too-scary coaster that still delivers thrills. —Josh Roberts, USA Today, 8 Jan. 2026

In Illinois, this record-holding coaster has the steepest drop and most inversions of any other ride in the world. —Sarah Scott, Parents, 6 Jan. 2026

And that coaster does not reside in the United States. —Robert Niles, Oc Register, 6 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