| 1. | a large pad for supporting the reclining body, used as or on a bed, consisting of a quilted or similarly fastened case, usually of heavy cloth, that contains hair, straw, cotton, foam rubber, etc., or a framework of metal springs. |
| 2. | air mattress. |
| 3. | a mat woven of brush, poles, or similar material, used to prevent erosion of the surface of dikes, jetties, embankments, dams, etc. |
| 4. | a layer of concrete placed on bare ground, as to provide a footing; mat. |
| 5. | a layer of any material used to cushion, protect, reinforce, or the like. |
