Pŏl'y-spăst, n.

n. [Fr. polyspaste, It. polispasto, Sp. polispastos, Lat. polyspaston, from Gr. πολύσπαστος, drawn from all sides, or by several cords, from πολύς, many, and σπᾶν, to draw.] (Med.) A machine consisting of many pulleys;—formerly used for reducing luxations. Dunglison.