Definitions from Wiktionary ( )

▸ noun:  One who operates.
▸ noun:  A telecommunications facilitator whose job is to establish temporary network connections.
▸ noun:  A member of a military special operations unit.
▸ noun:  (uncountable) The game of Chinese whispers.
▸ noun:  (informal) A person who is adept at making deals or getting results, especially one who uses questionable methods.
▸ noun:  (mathematics) A function or other mapping that carries variables defined on a domain into another variable or set of variables in a defined range.
▸ noun:  (computing) The administrator of a channel or network on IRC.
▸ noun:  (computing) A symbol that represents a construct in a programming language and differs from a normal function in its syntax.
▸ noun:  (linguistics) A kind of expression that enters into an a-bar movement dependency and is said to bind a variable.
▸ noun:  (transport) A bus driver.
▸ noun:  (slang) A thief or charlatan.
▸ noun:  (slang) A major criminal.
▸ noun:  (slang, dated) Someone who is successful at pursuing women; a player.

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