Also shortened to *hiraki 開. A generic term for doors *tobira 扉 which are hinged chōtsugai 蝶番 or move by means of a socket or pivot hinge hijitsubo 肘壷. They may open only one way, or they may be swinging doors, either single or double.
*ryōbiraki 両開 katabirakido片開戸
ryōbirakijizaido 両開自在戸 katabirakijizaido 片開自在戸