bo·no·bo (bə-nōbō, bŏnə-bō′)
n. pl. bo·no·bos
A species of chimpanzee (Pan paniscus) found only in the Congo River basin of the Democratic Republic of the Congo, having black hair and a more slender build than the common chimpanzee (P. troglodytes). Also called pygmy chimpanzee.
[Probably from a misspelling of Bolobo, the name of a town on the Congo River (now in the Democratic Republic of Congo) that was labeled on the crates in which the first living bonobos were sent to Europe.]
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Indo-European & Semitic Roots Appendices
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