(1):
(v. t.) To attach by, or furnish with, hinges.
(2):
(v. t.) To bend.
(3):
(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.
(4):
(n.) That on which anything turns or depends; a governing principle; a cardinal point or rule; as, this argument was the hinge on which the question turned.
(5):
(v. i.) To stand, depend, hang, or turn, as on a hinge; to depend chiefly for a result or decision or for force and validity; - usually with on or upon; as, the argument hinges on this point.
(6):
(n.) One of the four cardinal points, east, west, north, or south.