society > occupation and work > equipment > machine > parts of machines > parts which provide power > [noun] > pulleys (8)
A wheel or drum fixed on a shaft and turned by a belt, cable, etc., for the application or transmission of power, or to guide the belt.
Of machinery. to run idle, to run loose, without doing work or transmitting power.
a small wheel which ‘rides’ upon the top edge of a larger one, used for obtaining a high speed, or for keeping a rope in the groove of a grooved…