The Collaborative International Dictionary
Copperhead \Cop"per*head`\, n. [From its color.]
(Zo["o]l.) A poisonous American serpent ( Ancistrodon conotortrix), closely allied to the rattlesnake, but without rattles; -- called also copper-belly, and red viper.
A nickname applied to a person in the Northern States who sympathized with the South during the Civil War. [U.S.]
Usage examples of "red viper".
Ser Daemon tossed it to him, and the Red Viper snatched it from the air.
He had no desire to flaunt his maimed hand for Mace Tyrell or the Red Viper just now, much less the two of them together.
Ellaria Sand among the Dornishmen (Cersei had placed them at their own table, just below the dais in a place of high honor but as far from the Tyrells as the width of the hall would allow), laughing at something the Red Viper had told her.