Also written 円相床; also marumadodoko 丸窓床. A circular window placed in the center of the rear wall of an alcove *tokonoma 床の間, in a tea ceremony house. *Shōji 障子 that can be opened right and left during the performance of a tea ceremony. When the tea ceremony room *chashitsu 茶室 is not in use, the shōji are closed. Furthermore, the circular opening may enclose space that contains a Buddhist altar or a statue of a famous tea master. Another type of circular window is filled with small bamboo that is usually entwined with a dried vine. The bamboo and vine run both vertically and horizontally in the rear wall of the alcove. Sometimes a thin board about 15 cm wide is set in the center of the round window, and a flower vase is hung on a nail inserted into the board.
Examples: Nanshūji Daikokuan 南宗寺大黒庵, Osaka; Kōdaiji Shiguretei 高台寺時雨亭, Kyoto; Kainyoan 皆如庵 at Saigyōan 西行庵, Kyoto.
Kōdaiji Shiguretei 高台寺時雨亭 (Kyoto)