[{"Bold_text": "noun", "List Items": ["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.", "air mattress air mattress.", "a mat woven of brush, poles, or similar material, used to prevent erosion of the surface of dikes, jetties, embankments, dams, etc.", "a layer of concrete placed on bare ground, as to provide a footing; mat.", "a layer of any material used to cushion, protect, reinforce, or the like."]}]