1 [myool]
the sterile offspring of a female horse and a male donkey, valued as a work animal, having strong muscles, a body shaped like a horse, and donkeylike long ears, small feet, and sure-footedness. Compare hinny1.
any hybrid between the donkey and the horse.
Informal. a very stubborn person.
Botany. any sterile hybrid.
Slang. a person paid to carry or transport contraband, especially drugs, for a smuggler.
a small locomotive used for pulling rail cars, as in a coal yard or on an industrial site, or for towing, as of ships through canal locks.
Also called spinning mule. a machine for spinning cotton or other fibers into yarn and winding the yarn on spindles.
Nautical. a large triangular staysail set between two masts and having its clew set well aft.
Numismatics. a hybrid coin having the obverse of one issue and the reverse of the succeeding issue, or vice versa.
Biology. a hybrid, especially one between the canary and some other finch.

before 1000; Middle English < Old French < Latin mūla mule (feminine); replacing Old English mūl < Latin mūlus (masculine) Unabridged


2 [myool]
a lounging slipper that covers the toes and instep or only the instep.
a woman's shoe resembling this.

1350–1400; Middle English: sore spot on the heel, chilblain, perhaps < Middle Dutch mūle Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
mule1 (mjuːl)
1.  Compare hinny the sterile offspring of a male donkey and a female horse, used as a beast of burden
2.  any hybrid animal: a mule canary
3.  Also called: spinning mule a machine invented by Samuel Crompton that spins cotton into yarn and winds the yarn on spindles
4.  informal an obstinate or stubborn person
5.  slang a person who is paid to transport illegal drugs for a dealer
[C13: from Old French mul, from Latin mūlus ass, mule]

mule2 (mjuːl)
a backless shoe or slipper
[C16: from Old French from Latin mulleus a magistrate's shoe]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Main Entry:  mule
Part of Speech:  n
Definition:  See drug mule's 21st Century Lexicon
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Word Origin & History

"offspring of donkey and horse," O.E. mul, O.Fr. mul (fem. mule), both from L. mulus (fem. mula) "a mule," probably from a pre-Latin Mediterranean language.
"The mule combines the strength of the horse with the endurance and surefootedness of the ass, and is extensively bred for certain employments for which it is more suited than either; it is ordinarily incapable of procreation. With no good grounds, the mule is a proverbial type of obstinacy." [OED]
Properly, the offspring of a he-ass and a mare; that of a she-ass and a stallion is technically a hinny. Used allusively of hybrids and things of mixed nature. As a type of spinning machine, attested from 1797. Meaning "stubborn person" is from 1848; that of "narcotics smuggler or courier" first attested 1935. O.Fr. mul was replaced in Fr. by dim. form mulet, hence muleteer "mule driver" (1538), from Fr. muletier.

"loose slipper," 1560s, from M.Fr., from L. mulleus calceus "red high-soled shoe," worn by Roman patricians, from mullus "red" (see mullet). Related: Mules.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

Mule definition

text, tool
A multi-lingual enhancement of GNU Emacs. Mule can handle not only ASCII characters (7 bit) and ISO Latin 1 characters (8 bit), but also 16-bit characters like Japanese, Chinese, and Korean. Mule can have a mixture of languages in a single buffer.
Mule runs under the X window system, or on a Hangul terminal, mterm or exterm.
Latest version: 2.3.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Bible Dictionary

Mule definition

(Heb. pered), so called from the quick step of the animal or its power of carrying loads. It is not probable that the Hebrews bred mules, as this was strictly forbidden in the law (Lev. 19:19), although their use was not forbidden. We find them in common use even by kings and nobles (2 Sam. 18:9; 1 Kings 1:33; 2 Kings 5:17; Ps. 32:9). They are not mentioned, however, till the time of David, for the word rendered "mules" (R.V. correctly, "hot springs") in Gen. 36:24 (yemim) properly denotes the warm springs of Callirhoe, on the eastern shore of the Dead Sea. In David's reign they became very common (2 Sam. 13:29; 1 Kings 10:25). Mules are not mentioned in the New Testament. Perhaps they had by that time ceased to be used in Palestine.

Easton's 1897 Bible Dictionary
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American Heritage
Idioms & Phrases


see stubborn as a mule.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
But there the road terminates, and the only method of progression possible is
  on the back of a mule.
It takes six hours to hike from the canyon rim to the village, or three hours
  by mule.
The mule transfers the money to the crook's chosen account.
It's not so long ago that almost everyone was still a farmer, and with a horse
  or mule instead of a tractor.
Idioms & Phrases
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