Definition from Wiktionary, the free dictionary
- (martial arts) 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).
- Rōmaji transcription of
ninjutsu m (uncountable)
- (martial arts) ninjutsu (Japanese martial art used for espionage)