Warrior of feudal Japan (7)
I believe the answer is:
samurai
'warrior of feudal japan' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for samurai that I've seen before include "Military figures" , "Sudoku variant" , "Japanese warrior code" , "Member of military class" , "Trad. Japanese warrior caste" .)