Imperial Poem - Gyosei

Japanese: 御製 - ぎょせい

〘noun〙① When the Emperor or members of the Imperial Family write a document or work, or receive words as a gift. Also, the document itself. *Shosoin documents - June 21st, 756, 8th year of Tenpyo Shoho, Todaiji Temple offering book: "The retired Emperor discards the nation's precious treasures and offers them to Todaiji Temple. Written by the Empress Dowager." [Godai Shiki - Reikan Den] ② Specifically refers to waka poems and prose written by the Emperor or members of the Imperial Family. Nowadays, it is limited to the Emperor. Omiuta. Onuta. Gosei. Imperial poems. *Man'yoshu (late 8th century) 4, 485, inscription: "One poem and tanka poem composed by Emperor Okamoto." [Song History - Shinpo Den]

Go-sei [Imperial poem]

〘Noun〙 This refers to poems and prose written by members of the imperial family, especially the emperor. O-miuta (poems). Gyosei. ※Imakagami (1170) 2 "If you memorize these as the emperor's poems, they will be even more interesting to listen to."

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① 天皇や皇族が、文書や作品を書いたり、ことばを賜わったりすること。また、その文書。※正倉院文書‐天平勝宝八年（756）六月二一日・東大寺献物帳「太上天皇、捨国家珍宝等、入東大寺願文。皇太后御製」〔五代史記‐伶官伝〕② とくに、天皇や皇族が詠(よ)んだ和歌や詩文をいう。現在では天皇の場合に限っていう。おおみうた。おんうた。ごせい。御製歌。※万葉（８Ｃ後）四・四八五・題詞「岡本天皇御製一首并短歌」〔宋史‐神放伝〕