Urban Dictionary: quack

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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The sound a duck makes

by Lindsay February 25, 2003

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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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queens and jacks

The quacks in the doubleton are useless in this hand

by little_lovely_michael June 13, 2012

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A Quarter ounce of drugs.

Yo, I need a quack? Yo, you got a quack?

by gotjank June 25, 2007

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