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WordReference Random House Learner's Dictionary of American English © 2024rat•tle•snake /ˈrætəlˌsneɪk/USA pronunciation n. [countable]- Reptilesa snake, a pit viper, having a rattle at the end of the tail.
WordReference Random House Unabridged Dictionary of American English © 2024rat•tle•snake (rat′l snāk′),USA pronunciation n. - Reptilesany of several New World pit vipers of the genera Crotalus and Sistrurus, having a rattle composed of a series of horny, interlocking elements at the end of the tail.
- rattle1 + snake 1620–30, American.
Collins Concise English Dictionary © HarperCollins Publishers:: rattlesnake /ˈrætəlˌsneɪk/ n - any of the venomous New World snakes constituting the genera Crotalus and Sistrurus, such as C. horridus (black or timber rattlesnake): family Crotalidae (pit vipers). They have a series of loose horny segments on the tail that are vibrated to produce a buzzing or whirring sound
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