air mattress

a mattress, usually of plastic or rubber, that can be inflated for use, as in camping, and deflated for storage.

1925–30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To air mattress
Example sentences
If you piled blocks of ice up on the air mattress, the mattress would be depressed into the water surface and float lower.
The sixth guest must bring a sleeping bag or air mattress.
He testified that one of the boys slept in the bed that he had brought in and the other slept on an air mattress.
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