词源 |
pulley n.simple machine consisting of a wheel with a grooved rim for carrying a rope or other line and turning in a frame, used for raising a weight, late 13c., puli, from Old French polie, pulie "pulley, windlass" (12c.) and directly from Medieval Latin poliva, puliva, which according to Barnhart and Klein is probably from Medieval Greek *polidia, plural of *polidion "little pivot," diminutive of Greek polos "pivot, axis" (see pole (n.2)). As a verb from 1590s. updated on February 14, 2021 |