sho·gun 
(shōgən)
(shōgən)n.
One of a line of military commanders who from 1192 until 1867 were generally the actual rulers of Japan, although nominally subordinate to the emperor.
[Japanese shōgun, general, from Middle Chinese tsiaŋkyn (also the source of Mandarin jiāngjūn) : tsiaŋ, to take, bring, undertake, support + kyn, army.]