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Từ điển WordNet v3.1 - WordNet Dictionary
pit viper
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
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