noun
1. : a rope pulley with a groove of wavy outline to increase the grip on the rope
2. : a wheel with wavy outline used as a cam to give a reciprocating movement
noun
1. : a rope pulley with a groove of wavy outline to increase the grip on the rope
2. : a wheel with wavy outline used as a cam to give a reciprocating movement
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012