poster board

American  

Or posterboard

noun

poster boards plural

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.

Other Word Forms

Noun Inflected Forms

• poster boards
  plural

Etymology

Origin of poster board

First recorded in 1900–05

Example Sentences

See Examples For:

poster board

For five decades, the Ecuadorian siblings have created signs for stores using poster board and markers.

From The Wall Street Journal ● Apr. 22, 2026

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

He sat hunched over our poster board, checking it for the millionth time.

From "The Science of Breakable Things" by Tae Keller