Definition of "copperhead"

Any of certain of snakes having a copper-colored head in three families within suborder Serpentes.

1. Agkistrodon contortrix, a venomous pit viper species found in parts of North America.  examples

2. Deinagkistrodon acutus, the Chinese copperhead, a venomous pit viper species found in Southeast Asia  examples

3. Austrelaps spp. (Australian copperheads), a genus of venomous elapids found in southern Australia and Tasmania.  examples

4. Coelognathus radiatus (syn. Elaphe radiata), the copperhead rat snake, a non-venomous colubrid species found in southern Asia.  examples

(derogatory) Someone with ginger hair.  examples