Crossword Genius

Cereal box material (9)


I believe the answer is:


'cereal box material' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for cardboard that I've seen before include "without substance" , "stiff material" , "A stiff thick paper" .)

I've seen this clue in the Sydney Morning Herald.
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