The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several venomous arboreal snakes of the genus Dendroaspis of tropical Africa, especially D. angusticeps, a green or black tree snake having an often fatal bite.
n. Any of various venomous snakes of the genus Dendroaspis, native to Africa, that live in trees.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. arboreal snake of central and southern Africa whose bite is often fatal
Word Usage
"Speaking in debate on the Local Government Transition Bill, he said every black authority had been destroyed by the ANC "mamba" let loose by the Government."