poster board

noun

variants or less commonly posterboard

ˈpō-stər-ˌbȯrd 

plural poster boards also posterboards

1

a

: cardboard or thick paper that is fairly rigid, that typically has a white or colored coating on one or both sides, and that is used especially for signs, displays, and crafts

This activity requires paper (like poster board) and markers or crayons.

—The Brown University Child and Adolescent Behavior Letter

Despite a steady rain that made their posterboard signs sag and the ink run, more than 300 people … marched through Corvallis …

—Shawn Day

also : any of various materials that are similar to poster board in appearance and use

We cut the shape from a piece of thick plastic poster board.

—W. Wayt Gibbs

Artwork must be … mounted on foam poster board or another rigid surface.

—The Jackson (Ohio) County Times-Journal

If you want your signs to survive until Election Day, you have to shell out for corrugated poster board. If your signs are flimsy and drooping, so is your image.

—Richard Hyatt

b

: a sheet of poster board

So when she learned … that the players planned a strike the next day, Erin and her mom grabbed a poster board, made two signs and headed for Oakland Coliseum.

—Steve Henson

Colored poster boards tend to bleed or run when a water-based glue is applied.

—John Ross et al.

2

: a display on poster board

Each station had a three-fold poster board made and presented by students from the Psychology Department.

—Riley Weathersbee

… helping his daughter … make a posterboard about her family for school …

—Shruti L. Mathur

Word History

First Known Use

1895, in the meaning defined at sense 2