BLACKSNAKE
blacksnake, black racer, Coluber constrictor
(noun) blackish racer of the eastern United States that grows to six feet
Source: WordNet® 3.1
Etymology
Noun
blacksnake (plural blacksnakes)
Any of several relatively harmless North American snakes.
(US) A long, tapering whip.
Source: Wiktionary
Black" snake` or Black"snake, n. (Zoöl.)
Definition: A snake of a black color, of which two species are common in
the United States, the Bascanium constrictor, or racer, sometimes six
feet long, and the Scotophis Alleghaniensis, seven or eight feet
long.
Note: The name is also applied to various other black serpents, as
Natrix atra of Jamaica.
Source: Webster’s Unabridged Dictionary 1913 Edition