SACK n.
Originally, a loosely hanging garnment for women, worn like a cloak about the shoulders, and serving as a decorative appendage to the gown; now, an outer garment with sleeves, worn by women; as, a dressing saek. [Written also sacque.]
SCREW n.
, Compound screw, Foot screw, etc. See under Archimedes, Compound, Foot, etc. -- A screw loose, something out of order, so that work is not done smoothly; as, there is a screw loose somewhere. H. Martineau. -- Endless, or perpetual screw, a screw used to give motion to a toothed wheel by the action of its threads bet…