Definition of mamba
: any of several chiefly arboreal venomous green or black elapid snakes (genus Dendroaspis) of sub-Saharan Africa
Medical Definition of mamba
: any of several venomous elapid snakes (genus Dendroaspis) of sub-Saharan Africa that are related to the cobras but lack a dilatable hood; especially : a southern African snake (D. angusticeps) that has a light or olive-green phase and a black phase, that attains in the latter phase a length of 12 feet (3.66 meters), and that is noted for the quickness with which it inflicts its often fatal bite
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