Greenhouse (bathroom) - Onshitsu

Japanese: 温室（浴室） - おんしつ

…Naturally, storehouses for donations, furnishings, and materials, and supervisory offices (Shosoin) were also established, and the Buddhist temple organization was similar to that of a government office. Temple grounds and facilities came to be equipped with facilities such as dining halls for food etiquette and cooking, bathhouses (greenhouses) and toilets for purification, maintenance of robes and buildings, workshops for making Buddhist statues and paintings and copying sutras, gardens and flower gardens for flowers, fruits, vegetables, and lowly gardens for hired servants and slaves. The content and format of these multifaceted functions were introduced to Japan via the three Korean states. …

From [Yuya]

...A building with bathing facilities where the body is immersed in a bathtub filled with hot water. Temple asset ledgers from the Nara period already contain building names such as greenhouses, greenhouses, and bathhouses, and are thought to have been bathhouses as bathing facilities. These ancient bathhouse buildings no longer remain, but large bathhouses rebuilt after the Kamakura period remain at Todaiji Temple, Horyu-ji Temple, and other temples; Todaiji Temple has a kettle-shaped iron bathtub, while Horyu-ji Temple has a wooden bathtub made of thick planks set in the center.

*Some of the terminology that mentions "greenhouse (bathroom)" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…当然，施入物，什物，資財の倉や監理所(正倉院)も置かれ，仏寺機構は官衙と類似する。食作法や炊事の食堂院，清浄のための浴室(温室)や厠（かわや），法衣や建築物の維持管理，仏像仏画の製作や経典書写の作業所，花果蔬菜の苑院や花園院，雇民や奴婢の賤院など，寺地と施設を備えるようになった。このような多角的機能を備える内容と形式が朝鮮三国を経て日本に伝えられた。…

【湯屋】より

…湯をみたした浴槽に身体をひたす温湯浴の入浴設備のある建物のこと。奈良時代の寺院の資財帳にはすでに温室院，温室，湯屋などの建物名がみられ，入浴施設としての湯屋であったと考えられる。これらの古代の湯屋の建物は残っていないが，東大寺，法隆寺などには鎌倉時代以後に再建された大湯屋が残っており，東大寺には釜のような形の鉄製の湯槽（ゆぶね）が，法隆寺には厚板を組んで作った木製の湯槽が中央に据えてある。…

※「温室（浴室）」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

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