mule

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. hybrid offspring of a male donkey and a female horse;
usually sterile (Freq. 3)
• Derivationally related forms:
muleteer
• Hypernyms:
equine, equid
• Member Holonyms:
Equus, genus Equus
2. a slipper that has no fitting around the heel
• Syn:
scuff
• Hypernyms:
slipper, carpet slipper