Nengō
Meitoku (明徳) was a Japanese era name (年号 "nengō", "year name") of the Northern Court during the Era of Northern and Southern Courts after "Kōō" and before "Ōei". This period spanned the years from March 1390 to July 1394. After October 1392, Meitoku replaced the Southern Court's nengō ("Genchū").