Beast of burden
WordNet

noun


(1)   An animal such as a donkey or ox or elephant used for transporting loads or doing other heavy work
WiktionaryText

Noun



  1. A draught animal that carries or pulls heavy loads, such as a donkey, mule, or ox.
  2. Any domesticated animal trained to perform tasks for humans, such as a herding dog or trained falcon.
 
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