posterboard

Noun

 * 1)  Cardboard material suitable for making posters.
 * I used a piece of posterboard for my project.
 * 1) A piece of such material.
 * I used the posterboard for my project.
 * 1)  A flyer printed on stiff cardboard, approximately 8.5 by 11 inches, mailed flat.
 * They sent me a nice posterboard on the new product.