mamba

A venomous African snake of the family Elapidae; may climb trees; eats lizards and birds; strong venom; not usually aggressive (although the fastest snake ever recorded was a black mamba which reached 11 kph/7 mph while chasing a man who had been teasing it); two species: the black mamba (Dendroaspis polylepis), correctly the black-mouthed mamba, with body dark brown or grey, never black; and the green mamba (Dendroaspis angusticeps).

Mambas, of the genus Dendroaspis, are fast-moving tree-dwelling snakes of Africa.

The protagonist of the movie Kill Bill, The Bride, is also called Black Mamba

In A Series of Unfortunate Events by Lemony Snicket, there is a snake called the Mamba du Mal ("du Mal" means "of evil" in French).