The Collaborative International Dictionary
air bed
airbed \air"bed`\, air bed \air" bed`\ A sack or mattress inflated with air, and used as a bed.
Syn: air mattress, air-bed
Wiktionary
air bed
n. A bed that is inflated with air and used as a permanent or temporary bed. They are adjustable, and sometimes portable.
Usage examples of "air bed".
The truck's open-air bed was covered with a vinyl tarp, roughly resembling a giant hammock.
A slightly faded sun umbrella nearby, with a little girl lying on an air bed in its shade.