Any of various heavy-bodied American pit vipers of the genera Crotalus and Sistrurus, which have a series of horny rings at the end of the tail that…

A rattle-snake; also its rattle.

any of various rattlesnakes of the North American prairies; esp. the Western rattlesnake, Crotalus viridis (sometimes spec. the subspecies C. v. vi…

Originally and chiefly U.S. A rattlesnake.

= water rattler n.

the tree boa, Corallus hortulanus.

a desert snake, Crotalus cerastes, found in the south-western U.S. and Mexico; = sidewinder, n.2

Any of several small desert snakes that habitually move diagonally across the ground by throwing the body into a series of S-shaped curves; esp. a…

= prairie rattlesnake n.

a rattlesnake (Crotalus adamanteus) having diamond-shaped markings.

(a) the eastern diamondback rattlesnake, Crotalus adamanteus (now rare); (b) any of several non-venomous water snakes thought to resemble this, esp.…

A rattlesnake, Crotalus adamanteus or C. atrox, having diamond-shaped markings on its back. U.S.