1. a member of the ninja who were trained in martial arts and hired for espionage or sabotage or assassinations; a person skilled in ninjutsu • Topics: Japanese, Nipponese • Hypernyms: mercenary, soldier of fortune 2. a class of 14th century Japanese who were trained in martial arts and were hired for espionage and assassinations • Topics: Japanese, Nipponese • Hypernyms: class, stratum, social class, socio-economic class
