poster board

American  

Or posterboard

noun

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

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adjective

1. of, relating to, or made of poster board.

Etymology

Origin of poster board

First recorded in 1900–05

Example Sentences

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

MATAMOROS, Mexico — At a massive encampment near an international bridge along the U.S.-Mexico border, migrants from Honduras, Haiti, Venezuela and elsewhere have turned scraps of plastic, poster board and rope into makeshift homes.

From Washington Times • Aug. 23, 2023

In the middle of the night, I’d had a vision of the window framed in poster board stitched with super-bulky yarn like the edge of a quilting square.

From "Hope Springs" by Jaime Berry