n. An instrument of wood, metal, or other rigid material, used to hold anything, or to hold or fasten two or more things together by pressure so as to keep them in the same relative position.n. plural The hinged plates over the trunnions of a gun: generally called cap-squares.n. One of a pair of movable cheeks of lead or copper covering the jaws of a vise, and enabling it to grasp without bruising.n. In botany, in the mycelium of fungi, a nearly semicircular cellular protuberance, like a short branch, which springs from one cell of a filament close to a transverse wall, and is closely applied to the lateral wall of the adjoining cell. Each cell coalesces with the clamp, and thus an open passage is formed between the two cells. Also called clamp-cell.n. plural Andirons.To fasten with a clamp or clamps; fix a clamp on.n. A stack of bricks laid up for burning, in such a manner as to leave spaces between them for the access of the fire, and imperviously inclosed: called a brick-clamp, in distinction from a brick-kiln.n. A pile of ore for roasting, or of coal for coking.n. A mound of earth lined with straw thrown up over potatoes, beets, turnips, etc., to keep them through the winter.n. A large fire made of underwood.n. A heap of peat or turf for fuel.To burn (bricks) in a clamp. See clamp, n., 1.To cover (potatoes, beets, turnips, etc.) with earth for winter keeping.n. An obsolete form of clam.To tread heavily; tramp.n. A heavy footstep or tread; a tramp.To make or mend in a clumsy manner; patch.To patch or trump up (a charge or an accusation).n. A clamp-shell, Tridacna; a chama.