Definition of ninjutsu Ninjutsu

We found 2 definitions of ninjutsu from 2 different sources.

What does ninjutsu mean?

Noun Plural: ninjutsus
ninjutsu - the traditional Japanese method of espionage; involves stealthy movements and the use of camouflage
		ninjitsu
		martial art any of several Oriental arts of weaponless self-defense; usually practiced as a sport; "he had a black belt in the martial arts"

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ninjutsu (Noun)
The Japanese martial art that is a collection of techniques originally practiced for Japanese espionage purposes, and includes methods of gathering information, nondetection, avoidance, and misdirection techniques. Used by ninja 忍者.