ninja

n. （受過偷竊技術專門訓練被僱作間諜或刺客的）日本武士

英文釋義

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
2. a class of 14th century Japanese who were trained in martial arts and were hired for espionage and assassinations