[{"Bold_text": "noun", "List Items": ["a device, usually of some rigid material, for strengthening or supporting objects or fastening them together.", "an appliance with opposite sides or parts that may be adjusted or brought closer together to hold or compress something.", "one of a pair of movable pieces, made of lead or other soft material, for covering the jaws of a vise and enabling it to grasp without bruising.", "Also calledclamp rail.Carpentry.a rail having a groove or a number of mortises for receiving the ends of a number of boards to bind them into a flat piece, as a drawing board or door.", "Nautical.a horizontal timber in a wooden hull, secured to ribs to support deck beams and to provide longitudinal strength. mast clamp mast clamp.", "a horizontal timber in a wooden hull, secured to ribs to support deck beams and to provide longitudinal strength.", "mast clamp mast clamp."]}, {"Bold_text": "verb (used with object)", "List Items": ["to fasten with or fix in a clamp.Synonyms: secure , clench , clinch"]}, {"Bold_text": "verb phrase", "List Items": ["to impose or increase controls on.", "to become more strict:There were too many tax loopholes, so the government clamped down."]}]