Learn how to say Mules correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word mule:
1the offspring of a donkey and a horse (strictly, a male donkey and a female horse), typically sterile and used as a beast of burden. Compare with hinny1.
an obstinate person.
informal a courier for illegal drugs.
2a hybrid plant or animal, especially a sterile one.
any of several standard cross-bred varieties of sheep.
3 (also spinning mule) a kind of spinning machine producing yarn on spindles, invented by Samuel Crompton in 1779.
4a small tractor or locomotive, typically one that is electrically powered.
5a coin with the obverse and reverse of designs not originally intended to be used together.
Old English mūl, probably of Germanic origin, from Latin mulus, mula; reinforced in Middle English by Old French mule