one who lines, as, a liner of shoes.-a vessel belonging to a regular line of packets; also, a line-of-battle ship; a ship of the line.-a thin piece placed between two parts to hold or adjust them, fill a space, etc.; a shim.-a lining within the cylinder, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket.-a slab on which small pieces of marble, tile, etc., are fastened for grinding.-a ball which, when struck, flies through the air in a nearly straight line not far from the ground.