The injury gained as a result of being attacked by a ninja.
Ouch, I've got a painful ninjury on that knee!
by Mr nice guy May 24, 2005
1. The act of behaving like a ninja.
2. Thievery.
3. (less frequently) Any act of skulduggery.
1. With these new darkvision goggles I got in the mail, I can see the darkies sneaking around near the park. Their ninjary will get them nowhere!
2. The old lady isn't watching her purse, so quit being a pussy bitch and show me your ninjary skills.
by CriticalBastard February 27, 2011
When you have a small injury and you don't know how you got it.
"Dude, where did these bruises come from?"

"I dunno man, must be ninjaries."
by Gwyndylynn Rachelle January 02, 2014

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