noun, plural ce·ras·tes. any of several small vipers of the genus Cerastes, including the horned viper, that have a sideways looping motion like that of a sidewinder and inhabit deserts of northern Africa and southwestern Asia.
Origin:
1768; < Neo-Latin < Greek kerástēs literally, something horned, equivalent to kerat- stem of kéras horn + -tēs noun suffix; earlier in sense “asp,” Middle English < Medieval Latin, Latin, as above