Mamba | Define Mamba at Dictionary.com

mamba / ˈmɑm bɑ / Show Spelled [mahm-bah] Show IPA noun any of several long, slender, arboreal snakes of the genus Dendroaspis, of central and southern Africa, the bite of which is often fatal. Origin: 1860–65; Nguni; compare Zulu imamba, izimamba

dictionary.reference.com