Definition of mule noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//mjuːl//
    ; NAmE NAmE//mjuːl//
    Criminals, Footwear, Farm animals, Domesticated mammals
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  1. 1 an animal that has a horse and a donkey as parents, used especially for carrying loads He's as stubborn as a mule. a man on a mule See related entries: Farm animals, Domesticated mammals
  2. 2(slang) a person who is paid to take drugs illegally from one country to another The authorities believe these men are important figures in the drug trade, not merely mules. See related entries: Criminals
  3. 3 a slipper (= a soft shoe for wearing indoors) that is open around the heel See related entries: Footwear
  4. Word Originsenses 1 to 2 Old English mūl, probably of Germanic origin, from Latin mulus, mula; reinforced in Middle English by Old French mule.sense 3 mid 16th cent.: from French, ‘slipper’.
See the Oxford Advanced American Dictionary entry: mule