look up any word, like b4nny:
 
1.
n. A window ninja. Swings from rope attached to the top of a tall office building for the purpose of cleaning its windows. Like a ninja, he has the powers of stealth. Also like a ninja, he has the capacity to kill a man in a variety of ways. A winja's preferred weapon is the squeegee. When stealth is not necessary, winjas have been known to sing while stalking their victims.
When I walked back into my office, the winja outside my window scared the crap out of me. I knew he was not there for me because I was still alive.
by Winja November 15, 2006
 
2.
1. A White dude being a ninja!

2. A White ninja.

3. DMC drunk early in the morning.
Dude that guys a Winja!

I am the Winja

Winja-death star!!
by DMC13 August 14, 2006
 
3.
A person who is capable of owning you in everything that you do. Similar to a Grammar Nazi, A One Upper, only better.
"Dude, that is the fourth stright time you beat me in this game, what are you? Some sort of a Winja?"
by Burt Nubbins August 18, 2009
 
4.
Winja: Wanna-be Ninja. Someone who acts (or tries to act) like a Ninja, wears Ninja clothing, has Ninja weapons/equipment, but actually has no real skill as a Ninja, and no knowledge of their ways. A fake. Also, Ninja's don't just 'Flip out' and kill people. Only Winja's do that type of shit.
"You saw that guy dressed in black yesterday trying to do a backflip in the park? He is such a Winja."
by Edge; February 22, 2008
 
5.
A winja is an invisible assasin that attacks the brain functions and causes you to cluster fuck whatever the hell you were trying to say.

This applies mostly to conversation where you mix up letters between words, but it also applies to text correspondances as well.

When this happens, someone either uses it as a noun, saying "Winja" without any explaination, or sometimes they use it as a Verb, saying "you were Winjaed".
"Learn the nay of the winja-- I mean... FUCK."

"Haha! That was totally a Winja right there."
by DamnGlitch August 18, 2004