n.
A material similar to thick, stiff paper, that is made of pressed paper pulp or pasted sheets of paper. It is used for making cartons and signs, for example.
adj.
- Made of or consisting of cardboard.
- Flimsy; insubstantial.
- Lacking depth; superficial: a movie with only cardboard caricatures of its historical subjects.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
