pulleys
زبان مبدأ: انگلیسی
ترجمه به فارسی
- واژهنامه · Merriam-Webster Collegiate Dictionary pul·ley n. Pronunciation: ' pu ̇ -lē Function: noun Inflected Form:   plural pulleys Etymology: Middle English poley, pully, from Anglo-French pulie, probably ultimately from Greek polos axis, pole ― more at POLE Date: 14th century 1 : a sheave or small wheel with a grooved rim and with or without the block in which it runs used singly with a rope or chain to change the direction and point of application of a pulling force and in various combinations to increase the applied force especially for lifting weights 2 : a pulley or pulleys with ropes to form a tackle that constitutes one of the simple machines 3 : a wheel used to transmit power by means of a band, belt, cord, rope, or chain passing over its rim pulley 2]]>