定てい滑かっ車しゃていかっしゃMeanings1nounfixed pulleyA pulley whose axle is fixed in place; it changes the direction of force but does not provide mechanical advantage.定てい滑かっ車しゃは力ちからの向むきを変かえるために使つかわれる。A fixed pulley is used to change the direction of force.