a material made of paper pulp but thicker and stiffer than paper; pasteboard: used for making cards, boxes, etc.
- of or like cardboard
- insubstantial or flimsy: a cardboard empire
- superficial or shallow: cardboard characters in a play
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.
- Made of or consisting of cardboard.
- a. Flimsy; insubstantial.b. Lacking depth; superficial: a movie with only cardboard caricatures of its historical subjects.
(countable and uncountable, plural cardboards)