Don·key n.; pl. Donkeys
  1. An ass; or (less frequently) a mule.
  2. A stupid or obstinate fellow; an ass.
  Donkey engine, a small auxiliary engine not used for propelling, but for pumping water into the boilers, raising heavy weights, and like purposes.
  Donkey pump, a steam pump for feeding boilers, extinguishing fire, etc.; -- usually an auxiliary.
  Donkey's eye Bot., the large round seed of the Mucuna pruriens, a tropical leguminous plant.
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