Seam, n.
 1. The fold or line formed by sewing together two pieces of cloth or leather.
 2. Hence, a line of junction; a joint; a suture, as on a ship, a floor, or other structure; the line of union, or joint, of two boards, planks, metal plates, etc.
    Precepts should be so finely wrought together . . . that no coarse seam may discover where they join.   --Addison.
 3. Geol. & Mining A thin layer or stratum; a narrow vein between two thicker strata; as, a seam of coal.
 4. A line or depression left by a cut or wound; a scar; a cicatrix.
 Seam blast, a blast made by putting the powder into seams or cracks of rocks.
 Seam lace, a lace used by carriage makers to cover seams and edges; -- called also seaming lace.
 Seam presser. Agric. (a) A heavy roller to press down newly plowed furrows. (b) A tailor's sadiron for pressing seams. --Knight.
 Seam set, a set for flattering the seams of metal sheets, leather work, etc.