[AS. saga, from L. secare, to cut.] A thin steel blade with sharp teeth on its edge for cutting wood, etc. The chief kinds are the hand-saw, the cross-cutting saw, and the circular-saw, which is worked by machinery. The blades are of steel, the teeth being punched out by machinery, then ground and set and cleaned by emery. The saw-gin is the same as the cotton-gin, used in clearing the cotton fibre of its seeds.