blacksnake

UK: /ˈblækˌsneɪk/ US: (blak′snāk′)

WordReference Random House Unabridged Dictionary of American English © 2025

black•snake  (blak′snāk′), n. 

1. Reptiles Also called black racer. a blackish racer, Coluber constrictor subspecies, of the eastern U.S., that grows to a length of 6 ft. (1.8 m).
2. any of various other snakes of a black or very dark color.
3. a heavy, tapering, flexible whip of braided cowhide or the like.

Also, black′ snake′. 

• black + snake 1625–35, American.

Collins Concise English Dictionary © HarperCollins Publishers::

blacksnake / ˈblækˌsneɪk/ noun

1. any of several Old World black venomous elapid snakes, esp Pseudechis porphyriacus (Australian blacksnake)
2. any of various dark nonvenomous snakes, such as Coluber constrictor (black racer)