- Also called black racer. a blackish racer, Coluber constrictor subspecies, of the eastern U.S., that grows to a length of 6 feet (1.8 meters).
- any of various other snakes of a black or very dark color.
- a heavy, tapering, flexible whip of braided cowhide or the like.
- any of several Old World black venomous elapid snakes, esp Pseudechis porphyriacus (Australian blacksnake)
- any of various dark nonvenomous snakes, such as Coluber constrictor (black racer)
- US and Canadian a long heavy pliant whip of braided leather or rawhide