Operator

n.	1.	One who, or that which, operates or produces an effect.
	2.	(Surg.) One who performs some act upon the human body by means of the hand, or with instruments.
	3.	A dealer in stocks or any commodity for speculative purposes; a speculator.
	4.	(Math.) The symbol that expresses the operation to be performed; - called also facient.
	5.	A person who operates a telephone switchboard.
	6.	A person who schemes and maneuvers adroitly or deviously to achieve his/her purposes.

Noun	1.	operator - (mathematics) a symbol that represents a function from functions to functions; "the integral operator"
	2.	operator - an agent that operates some apparatus or machine; "the operator of the switchboard" Synonyms: manipulator
	3.	operator - someone who owns or operates a business; "who is the operator of this franchise?"
	4.	operator - a shrewd or unscrupulous person who knows how to circumvent difficulties Synonyms: wheeler dealer, hustler
	5.	operator - a speculator who trades aggressively on stock or commodity markets

(programming)

operator - A symbol used as a function, with infix syntax if it has two arguments (e.g. "+") or prefix syntax if it has only one (e.g. Boolean NOT). Many languages use operators for built-in functions such as arithmetic and logic.

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