pit viper in British English
noun
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
pit viper in American English
any of a subfamily (Crotalinae) of poisonous vipers with a prominent, heat-sensitive pit on each side of the head, as the rattlesnake or copperhead
Image ofpit viper
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