n. an important man; the boss man. (Also the name of a character in HBO's Sex and the City.) : So you're Mr. Big. I thought you'd be taller.
n. a nickname for the head of a group of criminals, especially one who wants to remain anonymous. : Lefty was asked to pay a visit to Mr. Big, and Lefty was scared.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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