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

Use scrap fabric or old clothes to sew a handful of squares, and use them as coasters, or put them in a frame for easy wall art. —Claire Hoppe Norgaard, Better Homes & Gardens, 23 Sep. 2025

Guests can also take home playful merch touches, from matchbooks to coasters designed for the occasion. —Hanna McNeila, Footwear News, 22 Sep. 2025

Galacticoaster will join three other coasters at Legoland California — Dragon (1999), Technic (2001) and Coastersaurus (2004). —Brady MacDonald, Oc Register, 22 Sep. 2025

Ride your favorite coasters like The Beast once (or thrice), made even scarier at night. —Caroline Ritzie, Cincinnati Enquirer, 21 Sep. 2025

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