screw stock (skrostok)

A handle for hold ing the threaded die by which the thread is cut on a bar or bolt; a screw-plate. E. H. Knight. screw stone (skröstön), n. A wheel stone; an entrochite; one of the joints of the stem of an encrinite, stone lily, or fo il cri noid; a fo il screw. See cuts under Encrinidæ and encrinite.