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Related to crotalid: crotalid snake
2. a term sometimes used to refer to any venomous snake.
Old World viper true viper.
pit viper any of a family of venomous snakes found in North America including the many types of rattlesnakes (genera Crotalus and Sistrurus), as well as the copperheads and water moccasins (both of genus Agkistrodon).
Russell's viper Vipera russellii, a true viper of Southeast Asia whose venom (Russell's viper venom) is used in blood tests.
Any member of the snake family Crotalidae.
1. any snake of the family Crotalidae; a pit viper.
2. of or pertaining to the family Crotalidae.