diamondback(redirected from diamondback rattlesnakes)
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1. (Animals) Also called: diamondback terrapin or diamondback turtle any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
2. (Animals) a large North American rattlesnake, Crotalus adamanteus, having cream-and-grey diamond-shaped markings
dia•mond•back(ˈdaɪ məndˌbæk, ˈdaɪ ə-)
1. bearing diamond-shaped marks on the back.n.
2. either of two large venomous rattlesnakes of the genus Crotalus having diamond-shaped markings on the back, C. adamanteus of the southeastern U.S., and C. atrox of the western U.S. and Mexico.