Meaning of OPERATOR in English

OPERATOR

/ ˈɒpəreɪtə(r); NAmE ˈɑːp-/ noun

1.

(often in compounds) a person who operates equipment or a machine :

a computer / machine operator

2.

( BrE also tel·eph·on·ist ) a person who works on the telephone switchboard of a large company or organization, especially at a telephone exchange

3.

(often in compounds) a person or company that runs a particular business :

a tour operator

a bus operator

4.

( informal , especially disapproving ) a person who is skilful at getting what they want, especially when this involves behaving in a dishonest way :

a smooth / slick / shrewd operator

5.

( mathematics ) a symbol or function which represents a operation in mathematics

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.