ETYM French, a she-mule, Latin mula, fem. of mulus; cf. Greek myklos, mychlos. Related to as. műl, from Latin mulus. Related to Mulatto.
1. A slipper that has no fitting around the heel; SYN. mules, scuff, scuffs.
2. Sterile offspring of a male donkey and a female horse.
Hybrid animal, usually the offspring of a male ass and a female horse.