| 释义 |
† ˈpolyspast Obs. rare—0.
[ad. Gr. πολύσπαστον a compound pulley, neut. of πολύσπαστος drawn by many cords.]
(See quots.)
[1693tr. Blancard's Phys. Dict. (ed. 2), Polyspaston, a Machine for reducing Joynts. 1706Phillips, Polyspaston.] 1730–6Bailey (folio), Polyspast, a windlass having many pullies or truckles. Polyspast (in Surgery), a machine for the reduction of dislocated joints. |