What does "air mattress" mean?

A mattress that is inflated with air, and used as a temporary or permanent bed.

What is a synonym for "air mattress"?

Common synonyms include: bedding, bolster, cushion, litter, mat, pad.

noun

noun ·Rare ·Advanced level

Noun

1
A mattress that is inflated with air, and used as a temporary or permanent bed.
2
a mattress that can be stored flat and inflated for use wordnet

From air + mattress.