the world > space > relative position > closed or shut condition > become closed or shut [verb (intransitive)] > become closed (of a door, window, etc.) > close or lock door(s) (4)
intransitive. To close, shut, or lock something, as a door, gate, or establishment. Obsolete.
intransitive. To close and secure a room, building, enclosure, etc., by locking the door or doors.
To secure (a door) with the chain; absol. to ‘put on the chain’.