1.Derived from the Japanese words for person (nin) and temple(ja) respectively, "ninja" as a noun refers to the sweetest being in the universe. Purpose of the ninja is to flip out and kill people, but his time is equally spent mackin' on hot babes and wailing on guitars.
a:The quality of being pumped-up or bearing resemblance to the actions of a ninja.
v:To perform ninja-like actions, such as cutting the head off of three guys at once.
Exclamation: Shout of surprise used when either
1: about to be assasinated by a ninja,
2: performing a ninja action
n1:Ninjas are totally sweet.
n2:Ninja Gaiden, I love that game! Oh, ninja...
a:Did you see that guy uppercut the kid through the window? That was ninja!
v:Oh man, Dante ninjaed those demons with that guitar!