Definition of mule
(Entry 1 of 2)
1a
: a hybrid between a horse and a donkey
especially
: the offspring of a male donkey and a mare
b
: a self-sterile plant whether hybrid or not
c
: a usually sterile hybrid
2
: a very stubborn person
3
: a machine for simultaneously drawing and twisting fiber into yarn or thread and winding it into cops
4
slang
: a person who smuggles or delivers illicit substances (such as drugs)
mule
noun (2)Definition of mule (Entry 2 of 2)
: a shoe or slipper without quarter or heel strap — compare scuff
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Merriam-Webster unabridged
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Time Traveler for mule
The first known use of mule was in the 13th century
See more words from the same century