1 definition by jdawg051994

Top Definition
n. An unreliable person; someone who agrees to do something, but never follows through. Someone that you can never count on to eat lunch with or go to a party with.
Jenny is a flake, she told me she'd go to that party with me on Friday, and she found plans with some other girl.
by jdawg051994 September 15, 2010

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