Meaning of OPERATOR in English
noun a dealer in stocks or any commodity for speculative purposes; a speculator.
2. operator ·noun one who, or that which, operates or produces an effect.
3. operator ·noun the symbol that expresses the operation to be performed;
called also facient.
4. operator ·noun one who performs some act upon the human body by means of the hand, or with instruments.
Webster English vocab. Английский словарь Webster. 2012