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cardboard

[kahrd-bawrd, -bohrd] /ˈkɑrdˌbɔrd, -ˌboʊrd/
noun
1.
a thin, stiff pasteboard, used for signs, boxes, etc.
adjective
2.
resembling cardboard, especially in flimsiness:
an apartment with cardboard walls.
3.
not fully lifelike; shallow; two-dimensional:
a play with cardboard characters.
Origin
1840-1850
1840-50; card1 + board
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for card-board

cardboard

/ˈkɑːdˌbɔːd/
noun
1.
  1. a thin stiff board made from paper pulp and used esp for making cartons
  2. (as modifier): cardboard boxes
adjective
2.
(prenominal) without substance: a cardboard smile, a cardboard general
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for card-board

cardboard

n.

1848, from card (n.) + board (n.1). Figurative sense is from 1893. An earlier word for the same stuff was card paper (1777).

Online Etymology Dictionary, © 2010 Douglas Harper
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7
8
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