society > occupation and work > equipment > shaping tools or equipment > [noun] > sharpening > others (3)
A tool with which a reaper whets or sharpens his scythe = straik, n.1 4. Also a mechanical grinder (see quot. 1846).
a smooth round bar of steel used to turn the edge of a cutting instrument so as to give it a flanged form (Cent. Dict. 1891).
A (mechanical) device for sharpening esp. double-edged razor blades. Cf. strop, n.1 3.