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A pretender to medical skill that is completely unqualified and is simultaneously a weirdo.
You went to see Dr. Bombay? That quacko is all crazy eyes and pseudoscience. He tried to convince me I needed to buy a breast pump from him to cure my inverted nipples.
quacko by Joish December 18, 2008
Quarks are a fundemental particles, not as small as Leptons (and the family) but very small, there are 6 'Flavours'
1. Up
2. Down
3. Strange
4. Charmed
5. Top
6. Bottom
and three 'Colours' Green, Red Blue.

They exist in differnt charges +1/3 +2/3 -1/3 -2/3 three of these make up neutons protons...
A proton is made up of two +2/3(red and blue) quarks and a -1/3(green)quakr making a +1 charge!
Quark by Wolfmankurd November 9, 2005
A fart that comes from the penis
"Hey, did you fucking quank in my face again... your never getting a blowjob again!"
Quank by more than balls October 22, 2008
In chemistry, a quark is a simple particle which combines with other quarks to make hadrons. It can be used to describe a very simple (dumb) person. Quarks naturally group together. Chances are, if you find one quark, there's plenty more near you.
Tyler- "Kelsey, why can't you pronounce cinnamon right? You're such a quark!"

Kelsey- "Do you know why you're failing chemistry? You don't do shit in class! You're a quark!"

Tyler-"Damn..."
Quark by -Trollkriger- October 7, 2009
Thanks to Apple device auto correct, "doctor" is frequently corrected to "quacks"
Yeah, I have an appointment at the quacks tomorrow.
Quacks by azlairian November 1, 2011
1. A word you say when somebody asks for a noun or verb and you want to be annoying.

2. A mythical square fruit (square + quince).

3. A word that can mean almost anything in almost any case.
1. Clyde: Okay, I need a noun.
Phil: Ummm...quace.
Clyde: Quace?
Phil: Sorry.

2. Phil: I'm hungry.
Clyde: Me too. I could really go for a quace.

3. Clyde: Hey Phil, could I borrow a pencil?
Phil: Quace.
Quace by MpegEVIL August 7, 2011