from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the traditional Japanese method of espionage; involves stealthy movements and the use of camouflage
From Japanese 忍術 (ninjutsu). (Wiktionary)