'Interrupter' definitions:

Definition of 'interrupter'

(from WordNet)
noun
A device for automatically interrupting an electric current

Definition of 'Interrupter'

From: GCIDE
  • Interrupter \In`ter*rupt"er\, n.
  • 1. One who, or that which, interrupts. [1913 Webster]
  • 2. (Elec.) 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. [Also spelled interruptor.] [1913 Webster]