interrupter

noun3

1. •
   One who or that which interrupts.

   • The interrupter bowed, smiled, stroked his beard, and relapsed into his chair. — 1912
2. •
   A device for opening and closing an electrical circuit.
3. •
   (slang, humorous) An interpreter (person who interprets speech in a foreign language).

   • The other half of the local staff was employed as interpreters, often affectionately known as 'interrupters.' — 2005