interrupter

plural interrupters

1. One who or that which interrupts.

   The interrupter bowed, smiled, stroked his beard, and relapsed into his chair.

   1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC

2. A device for opening and closing an electrical circuit.
3. humorousslangAn 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, Ian Oliver, Jan Oliver, War and Peace in the Balkans

   1 more example

   The Coldstream Guards were already in place and knocked on the door. Daz Farrugia stood at the door with the Iraqi interrupter. […] The door opened and a middle aged Iraqi man stood there in his pajamas, gobbing off in Arabic, saying who knows what, but I guessed it was not very complimentary; the interpreter managed to calm him down.

   2017, Dean Bailey, Crawling Out of Hell: The True Story of a British Sniper's Greatest Battle