单词	rattlesnake
释义	rattlesnake \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ noun : any of numerous New World pit vipers that have a series of horny interlocking joints at the end of the tail which make a sharp rattling sound when vibrated, that comprise two genera of which one (Sistrurus) contains small snakes (as the massasaugas and ground rattlesnakes) having the head covered with symmetrical plates and the other (Crotalus) contains usually larger snakes that have scales instead of headplates, are rather thick-bodied, large-headed snakes of sluggish disposition which seldom bite unless startled or pursuing prey, and occur across most of America from southern Canada to Argentina — see canebrake rattler, diamondback rattlesnake, prairie rattlesnake, sidewinder, timber rattlesnake, western diamond rattlesnake
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