Copperhead
Pronunciation : Cop"per*head`
Part of Speech : n.
Etymology : [From its color.]
Definition : 1. (Zo?l.)
Defn: A poisonous American serpent (Ancistrodon conotortrix), closely allied to the rattlesnake, but without rattles; -- called also copper-belly, and red viper.
2. A nickname applied to a person in the Northern States who sympathized with the South during the Civil War. [U.S.]
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder