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3.
the act or process of being injured by a ninja
He was in the field picking peaches from a tree when he was ambushed and suffered a ninjury.
by Otrant May 14, 2006
 
1.
1. injuries caused by ninja attacks.
Those weren't regular injuries on the pirates, those were ninjuries caused by the ninja known as Debs
by Wild and Witless May 18, 2006
 
2.
an injury of unkown origin, thus being attributed to a ninja
"Man check out this ninjury on my shoulder! how the hell did that happen?!"

"You got ninjured bad"
by Oscarararararararara February 04, 2010
 
4.
injury of unexplained origin, often attributed to inebriated activities.
where'd all these bruises come from? that was a big night last night. Damn ninjury.
by tasteyface July 27, 2010
 
5.
Injury sustained whilst in the act of sneaking or attempting to sneak.
When creeping around in dark and unfamliar surroundings it is easy to cause yourself ninjury.
by thebathtubsophist January 09, 2012
 
6.
When you get injured by a ninja and least expect it.....Then again they are so sneaky you never expect it.
Dude I was walking down the street and got jump kicked in the face and didn't even see it coming. I had to go to the hospital due to my ninjury.

Past tense: I was at the hospital because I was Ninjured and I didn't even see it coming.
by mpdc November 02, 2011
 
7.
To be physically damaged by a ninja.
"Sorry boss, I wont be in work today, I have a severe 'ninjury' ."
by Omegatron Hard'mofo'castle September 04, 2011