(pl. -eys)(亦作pulley wheel)
1- a wheel with a grooved rim around which a cord passes, which acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights滑轮, 滑车。
1.1
- a wheel or drum fixed on a shaft and turned by a belt, used especially to increase speed or power皮带轮。
-eys, -eyed
with obj. hoist with a pulley用滑轮升起（或绞起）。
词源
Middle English: from Old French polie, probably from a medieval Greek diminutive of polos 'pivot, axis'.