The term 'turning device' can refer to three different objects: a LATHE (5 letters), a HINGE (5 letters), and a DIAL (4 letters). A LATHE is a machine tool used for shaping metal or wood by rotating it against a cutting tool. A HINGE is a mechanical device that allows two objects to be connected and move relative to each other in one direction. A DIAL is a circular instrument used to adjust or control the settings of a machine or device. All three of these objects are turning devices, as they are used to rotate or turn something.