Onoore - Onoore

...The plant that corresponds to the azusa in the azusa bow, which is used in songs as a pillow word for i, iru, hiku, haru, moto, sue, tsuru, yoru, kaeru, ya, and oto, has been suggested by many people since ancient times, including catalpa, akamegashiwa, onoore, and rinboku (holly oak). However, Kotaro Shirai proposed the theory that it was a beetle (bibliaceae) plant, which was also verified by the results of a microscopic examination of the azusa bow in the Shosoin Repository, and is now the accepted theory.

*Some of the terminology explanations that mention "Onoore" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…い，いる，ひく，はる，もと，すえ，つる，よる，かえる，や，音などにかかる枕詞として歌に詠まれた梓弓の梓にあたる植物には，古来キササゲ，アカメガシワ，オノオレ，リンボク(ヒイラギガシ)などの諸説があり一定しなかった。ところが白井光太郎がカバノキ科のヨグソミネバリ(ミズメ)説を唱え，正倉院の梓弓についての顕微鏡的調査の結果からも実証され，現在これが定説になっている。…

※「オノオレ」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報