Dynamo
WordNet

noun


(1)   Generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature
WiktionaryText

Noun


  1. A dynamo-electric machine
  2. An energetic person
    That new Vice President of Marketing is a real dynamo; sales have already gone up this quarter.
 
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