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Meaning of ninja

nin•ja

Pronunciation: (nin'ju), [key]
— pl. -ja, -jas.
  1. a member of a feudal Japanese society of mercenary agents, highly trained in martial arts and stealthwho were hired for covert purposes ranging from espionage to sabotage and assassination.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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