also: れきおう
noun
Ryakuō era; Rekiō era
Japanese era name (年号) of the Northern Court during the Nanboku-chō period, corresponding to 1338–1342 in the Western calendar.
暦応年間に、足利尊氏が征夷大将軍に任命された。
During the Ryakuō era, Ashikaga Takauji was appointed Seii Taishōgun.
The era name 暦応 (Ryakuō) was adopted by the Northern Court in 1338. The exact derivation is uncertain, but it likely follows traditional Chinese-based era naming conventions.