The term 'Dynamo Part' refers to the components of a dynamo, which is an electrical GENERATOR that produces direct current with the use of a commutator. The four parts of a dynamo are the ARMATURE (8 letters), ROTOR (5 letters), stator (6 letters), and GENERATOR (9 letters). The ARMATURE is a coil of wire that rotates within a magnetic field, the ROTOR is a rotating part of the dynamo, the stator is a stationary part of the dynamo, and the GENERATOR is the device that produces electricity.