hinge

n. 1 movable joint on which a door, lid, etc., turns or swings. 2 principle on which all depends. v. (-ging) 1 (foll. By on) depend (on a principle, an event, etc.). 2 attach or be attached by a hinge. [related to *hang]

n. The hook with its eye, or the joint, on which a door, gate, lid, etc., turns or swings; a flexible piece, as a strip of leather, which serves as a joint to turn on.