Interrupter
Pronunciation : In`ter*rupt"er
Part of Speech : n.
Definition : 1. One who, or that which, interrupts.
2. (Elec.)
Defn: A device for opening and closing an electrical circuit; a vibrating spring or tuning fork, arranged to make and break a circuit at rapidly recurring intervals, by the action of the current itself.
Source : Webster's Unabridged Dictionary, 1913