Anynuipe - Anynuipe

...The sakamakura used in the Daijosai ceremony is one such type of pillow, measuring 150cm long and 300cm wide, with one side elevated like a slope, and placed under the bed. The style of wrapping the pillow and stuffing it with grass is found in the Ainu Eninuipe pillow, which is made of turtle grass, and gives an idea of ​​the ancient form of the komo pillow. This was further developed into the Nishikimakura and Katorimakura, in which the outside is made of silk and the inside is stuffed with cotton. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…大嘗祭に使う坂枕（さかまくら）もこの一種で，長さ尺5寸，幅3尺，一方を高く坂のようにしたこもを寝床の下にあてがう。こもを巻いた中に草を詰める形式は，アイヌのエニヌイペというがま草の枕があり，薦枕の古い姿がうかがわれる。これがさらに進んで外側を絹などで作り，中に綿などを詰めるようになったのが錦枕や縑（かとり）枕である。…

※「エニヌイペ」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