definition of
operator

[1] #1 operator n. (mathematics) a symbol or function representing a mathematical operation. wn

[2] #2 operator n. [manipulator] an agent that operates some apparatus or machine; "the operator of the switchboard". wn

[3] #3 operator n. someone who owns or operates a business; "who is the operator of this franchise?". wn

[4] #4 operator n. [hustler, wheeler dealer] a shrewd or unscrupulous person who knows how to circumvent difficulties. wn

[5] #5 operator n. a speculator who trades aggressively on stock or commodity markets. wn