noun
round well curb
Refers to the wooden or stone frame around the mouth of a round well. An archaic word, now mostly known from the famous poem in the Ise Monogatari.
「筒井筒」は伊勢物語の歌で知られる古い言葉だ。
"Tsutsuizutsu" is an old word known from a poem in the Ise Monogatari.