rare. [ad. L. trispastos (Vitruvius), a. Gr. τρίσπαστος adj., f. τρι-, TRI- + σπά-ειν to draw, pull.] An (ancient) apparatus with three pulleys for hoisting heavy weights.
1706. Phillips (ed. Kersey), Trispast (Gr.), an Engine that consists of three Pulleys.
1819. in Pantologia; and in later Dicts.
