1. 
   Break-circuit
   Break'-cir`cuit noun (Electricity) A key or other device for breaking an electrical circuit.
   Found op http://www.encyclo.co.uk/webster/B/94
   
   
2. 
   break-circuit
   <physics> A key or other device for breaking an electrical circuit. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?break-circuit
   
   
3. 
   Break-circuit
   • (n.) A key or other device for breaking an electrical circuit.
   Found op http://thinkexist.com/dictionary/meaning/break-circuit/
   
   

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