a mattress, usually of plastic or rubber, that can be inflated for use, as in camping, and deflated for storage.
Origin of air mattress
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for air mattress
Historical Examples of air mattress
But, dear traveler, it is much simpler to take an air-mattress and a foot-pump.Tenting To-night
Mary Roberts Rinehart