A mercenary in feudal Japan trained in martial arts
Ninjas were a group of mercenaries in feudal Japan who were 
trained... [DOC] [TLE] Ninja dictionary definition | ninja defined - YourDictionary [PAR] The definition of ninja is a warrior or assasin trained in the martial art ninjutsu, ... 
of medieval Japanese mercenary agents who were trained in the martial arts... [DOC] [TLE] Ninja | Define Ninja at Dictionary.com [PAR] Ninja definition, a member of a feudal Japanese society of mercenary agents, 
highly trained in martial arts and stealth (ninjutsu) who were hired for covert... [DOC] [TLE] Ninjutsu | Define Ninjutsu at Dictionary.com [PAR] a member of a feudal Japanese society of mercenary agents, highly trained in 
martial arts and stealth (ninjutsu) who were hired for covert purposes ranging 
from... [DOC] [TLE] Ninjas - definition of ninjas by The Free Dictionary [PAR] A member of a class of medieval Japanese mercenary agents who were trained 
in the martial arts and hired for covert operations such as assassination and... [DOC] [TLE] Ashigaru  Japan's Overlooked And Underappreciated Warriors [PAR] Jun 29, 2015 ...