hinge
1. hinge \'hinj\ n [ME heng; akin to MD henge hook, OE hangian to hang] 1a: a jointed or flexible device on which a door, lid, or other swinging pa rt turns 1b: a flexible ligamentous joint 1c: a small piece of thin gummed paper used in fastening a postage stamp in an album 2: a determining factor : TURNING POINT 2. hinge vt : to attach by or furnish with hinges to be contingent on a single consid eration {success ~s on the decision}