Walnut 

swimming term: used for when a male dives off the blocks and his tail end coems down too late, making his nuts hit the water with such force that it makes a smashing sound

guy: Damn man, that was one nasty walnut you did there
other guy: yeah man, I can feel it

Walnut by Zach December 14, 2004

Walnut 

(Wal-nut) Pronounced: "Wall" and "nut"
A term widely known for Marijuana. Those who use it are on the rather cooler side than the other Pecs (Pecans.) The term "Walnut" originates in the upper east side. Some refer to it as God, but others call it Whoopi Goldberg. One that takes part in such activities may be referred to as a "Nut." When one consumes Walnut, they often becomes "Nuts."

"Damn. I gotta get me some Walnut, so I can go nuts later, Nut."

Walnut by SAMFRANCANDLEEBAKE November 18, 2011

Walnut 

This is when the male homo sapien ejaculates on his vertical room divider. He will have accomplished a fulfilled a wallnut.

AAHHUHHUH...damn man i just walnutted

Walnut by jabeki February 8, 2020

walnut 

some fucking ass nerd who doesnt know how to dress

generally seen dropping their books on the floor and pushing their glasses up the bridge of their noses

"Man, I just saw your sixth grade picture, did you only wear turtlenecks?"

"Yeah, I was such a walnut."

walnut by **@*#&*(#& January 31, 2008

Walnut 

When you jerk off in a Walmart and you bust a nut.

Jeff, "Bro I just had a walnut dude"
Bob, "What the absolute fuck".

Walnut by BigRussian December 17, 2018

walnut 

A sexual position in which you place the womans legs together which appears to make a walnut.

I placed her legs together and cracked the walnut.

walnut by Anonymous February 18, 2003

WALNUT 

A Walnut is a cunt who is just a cunt and will say cunty things because hes a cunt

*your doing there own thing*
*Walnut enters room and flip table and throws your stuff on the floor*
Walnut: *autistic Screeching*
John: Fuck off Walnut

WALNUT by Antiseve November 9, 2017