noun
hinged door; swinging door
Refers to a door that opens by swinging on hinges, as opposed to a sliding door (引き戸). Common in both residential and commercial contexts.
この部屋のドアは開き戸です。
The door to this room is a hinged door.
開き戸を閉めるときは静かにしてください。
Please close the hinged door quietly.