poster board

American

Or posterboard

noun

a thick, fairly stiff cardboard composed of layers of paper or paper pulp compressed together and typically used to support displays.

adjective

of, relating to, or made of poster board.

Etymology

Origin of poster board

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They simply plugged in the numbers they could easily find, fudged the rest and threw it on a poster board.

From Salon • Apr. 5, 2026

At his laptop in London last week, he watched as the president unveiled a poster board outlining tariff rates, some as high as 50%, for imports from countries around the world.

From BBC • Apr. 10, 2025

We cut out pictures, did the poster board and everything.

From Los Angeles Times • Feb. 7, 2025

Frequently spotted on sidelines these days is a large sheet, tarp or poster board used to shield signs from ending up on scouting film.

From Washington Times • Oct. 22, 2023

Kneeling in front of the poster board, there’s so much whiteness, I’m tempted to find a soft-lead pencil and draw tiny footprints, maybe two sets, walking through a windswept field of snow.

From "Rules" by Cynthia Lord

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023