What is "cardboardy"

Usage examples of "cardboardy".

She ransacks the store for freeze dried plaice and mushrooms, little balls of cardboardy rice.

Packed behind the chromium rails waiting for the flight to be called, cardboardy Eastern Airlines coffee spilling out of the container, poked in the eye by the New York Times, then jammed into the tiny shuttle seats.

Edwards, bound by duty, a lingering affection for his chief, decent interest and everything that was proper had enveloped the treaty in linen, waxed silk and an outer case: he always carried it in his bosom, and now as he and Stephen stood side by side on the lofty poop of Li Po's junk, gazing astern, he tapped his chest, which gave out an answering hollow, cardboardy sound, and said, 'Sometimes it appears to me that this document is under a curse.