蒙もう古こ帝てい国こくもうこていこくMeanings1nounMongol Empirehistorical termHistorical term for the empire founded by Genghis Khan. Often used in historical contexts; the modern country is モンゴル.See also: モンゴル帝国蒙もう古こ帝てい国こくは13世せい
