noun
: a friction clutch in which a set of rollers surrounding a shaft is wedged (as by a locking pawl) between this shaft and a hub on a second shaft to be connected with it
noun
: a friction clutch in which a set of rollers surrounding a shaft is wedged (as by a locking pawl) between this shaft and a hub on a second shaft to be connected with it
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012