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

In bright red paint, a message on a poster board shone: “We love you, Beautiful Altadena.”

From Los Angeles Times ● Jan. 11, 2025

In the gymnasium at Gregory Heights, third graders rode bikes from one end to the other, stopping whenever Niculita held up stop signs or a large poster board with a black car on it.

From Seattle Times ● Apr. 27, 2024

Each partner was supposed to use half of the poster board and then we’d see what we had in common.

From "P.S. I Miss You" by Jen Petro-Roy