operator
op.er.a.tor \'a:p-(*-).ra-t-*r\ n 1: one that operates : as 1a: one that operates a machine or device 1b: one that operates a business 1c: one that performs surgical operations 1d: one that deals in stocks or commodities 2a: MOUNTEBANK, FRAUD 2b: a shrewd and skillful person who knows how to circumvent restrictions o r difficulties 3: a mathematical or logical symbol denoting an operation to be performed