Operator

operator ˈɒpəreɪtə/ noun noun: operator; plural noun: operators

   1.
   a person who operates equipment or a machine.
   "a radio operator"
   synonyms:	machinist, mechanic, operative, engineer, driver, worker; machine minder
   "a machine operator"
       a person who works at the switchboard of a telephone exchange.
       "calls are made through the operator"
   2.
   a person or company that runs a business.
   "a tour operator"
   synonyms:	contractor, entrepreneur, promoter, impresario, arranger, fixer, trader, dealer, director, manager, partner, businessman, businesswoman, financier, venture capitalist, speculator
   "a tour operator"