枢 くるる くろろ くる くるり とぼそ とまら pivot hinge (using extensions on the top and bottom of a door that fit into cavities in the frame) n sliding wooden bolt (for holding a door or window shut) n cavities in the frame of a door used as part of a pivot hinge n door n extensions on the top and bottom of a door that fit into cavities in the frame (as part of a pivot hinge) n uk Advanced ➥