By extension, it refers to duties, such as tansen (a kind of provisional tax in medieval Japan), imposed on Shugo daimyo (Japanese territorial lord as provincial constable) and each province by the Muromachi bakufu (Japanese feudal government headed by a shogun), and duties imposed by the Shugo daimyo on their own territories.
転じて室町幕府が守護大名及び諸国に課した段銭などの課役、及び守護大名が独自に領国に対して賦課した課役のこと。