construction paper

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A heavy paper produced in many colors and used in artwork especially for making folded or cutout designs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Thick colored paper that people cut out to make designs, models, etc

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun paper suitable for drawing and making cutouts