mattress - a large thick pad filled with resilient material and often incorporating coiled springs, used as a bed or part of a bedair mattress - a mattress that can be stored flat and inflated for use bed - a piece of furniture that provides a place to sleep; "he sat on the edge of the bed"; "the room had only a bed and chair" futon - mattress consisting of a pad of cotton batting that is used for sleeping on the floor or on a raised frame pad - a usually thin flat mass of padding pallet - a mattress filled with straw or a pad made of quilts; used as a bed |