- mule - sterile offspring of a male donkey and a female horse
--1 is a kind of slipper, carpet slipper; equine, equid; slipper, carpet slipper; equine, equid
--1 is a member of Equus, genus Equus- mule, mules, scuff, scuffs - a slipper that has no fitting around the heel
--2 is a kind of slipper, carpet slipper; slipper, carpet slipper
- mule, mules, scuff, scuffs - a slipper that has no fitting around the heel