Definify.com
Webster 1913 Edition
Copperhead
Cop′per-headˊ
,Noun.
[From its color.]
1.
(Zool.)
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.]