Definition of cardboard
(Entry 1 of 2)
: a material made from cellulose fiber (such as wood pulp) like paper but usually thicker
cardboard
adjectiveDefinition of cardboard (Entry 2 of 2)
1
: made of or as if of cardboard
2
: unreal, stereotyped
a play with cardboard characters
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Merriam-Webster unabridged
Share cardboard
Time Traveler for cardboard
The first known use of cardboard was in 1789
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