pit viper

Từ điển WordNet v3.1 - WordNet Dictionary

noun

New World vipers with hollow fangs and a heat-sensitive pit on each side of the head
• Hypernyms:
viper
• Hyponyms:
copperhead, Agkistrodon contortrix, water moccasin, cottonmouth, cottonmouth moccasin,
Agkistrodon piscivorus, rattlesnake, rattler, fer-de-lance, Bothrops atrops
• Member Holonyms:
Crotalidae, family Crotalidae