A doctor of questionable ablitiy and reputation.
Even tho Erin's dad claims to be a doctor, I say he's a quack! He didn't even graduate high school!
by Stella Lafayette December 04, 2004
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A scam-artist. A person who makes up bullshit medical products or advice or prescriptions that don't work. A snake oil salesman.
Most alternative medicine "specialists" and psychics are quacks.
by Anonymous February 17, 2003
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1. a fraudulent physician

2. any physician
This quack has no skills in medicine at all.
by Light Joker December 31, 2005
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A very sexy sound when moaned by a girl.
guy: so what do ducks say?
girl: ...quack.....
by MallardDuck January 31, 2009
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Yo, I need a quack? Yo, you got a quack?
by gotjank June 25, 2007
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