air mattress

noun
1.
a mattress, usually of plastic or rubber, that can be inflated for use, as in camping, and deflated for storage.
Origin
1925-30
Examples from the web for air mattress
  • 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.