A mercenary in feudal Japan trained in martial arts
a class of 14th century Japanese who were trained in martial 
arts and were hired for espionage and assassinations; a member of the ninja... [DOC] [TLE] Shinobi Fitness [PAR] We are the first Ninja Obstacle specific training facility in Southern Illinois and the 
... Shinobi Fitness, LLC was founded by Martial Artist and Bujinkan Budo ... A 
ninja (?)