blacksnake

{ it>or }, n. (Zool.) 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. [ 1913 Webster ]

☞ The name is also applied to various other black serpents, as Natrix atra of Jamaica. [ 1913 Webster ]