Copperhead

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.

venomous but sluggish reddish-brown snake of Australia

common coppery brown pit viper of upland eastern United States