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Any of various venomous snakes of the subfamily Crotalinae, such as the copperhead, rattlesnake, or fer-de-lance, characterized by a small sensory pit below each eye.
(Animals) any venomous snake of the New World family Crotalidae, having a heat-sensitive organ in a pit on each side of the head: includes the rattlesnakes
any of various vipers, as the rattlesnake and copperhead, that have a heat-sensitive pit above each nostril.
Any of various venomous snakes having a small pit below each eye that is used to sense heat. Their fangs are hollow and folded back in the mouth when the snake is not striking prey. Pit vipers are mostly found in the Western Hemisphere and include the cottonmouth and rattlesnakes.
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|Noun||1.||pit viper - New World vipers with hollow fangs and a heat-sensitive pit on each side of the head|
viper - venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw
Agkistrodon piscivorus, cottonmouth, cottonmouth moccasin, water moccasin - venomous semiaquatic snake of swamps in southern United States