Top Definition
The same as suicide but with a ninja instead of a gun, rope, car exhaust...ect.

Purposly picking a fight with a ninja because you have a death wish.
Dan: Hey ninja, what's the matter? wake up on the wrong side of your mother this morning??

<later at Dan's closed casket funeral>
John: So, how did Dan die?
Kate: it was ninjacide...
John: Sweet!
by neversweat May 18, 2006
The act of being slaughtered by a band of roaming ninjas armed with only rusty spoons
I'm going to commit ninjacide
by Master Hades November 25, 2009
a ninja(s) committing genocide upon a species or certain group
1.The human race became extinct due to ninjacide.

2. All pirates were removed from existance with the act of ninjacide.
by Tre Jones November 17, 2007
When all ninjas are completely wiped off the face of the earth.
No. They did it. The pirates commited Ninjacide. Dear god.
by beattie April 11, 2005
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