baboon
Concise Oxford English Dictionary © 2008 Oxford University Press:
baboon/bəˈbuːn/
▶noun a large ground-dwelling social monkey with a long doglike snout and large teeth. [Genera Papio and Mandrillus: several species.]
– origin ME (denoting a grotesque figure used in architecture): from OFr. babuin or med. L. babewynus, perh. from OFr. baboue ‘muzzle, grimace’.
'baboon' also found in these Oxford entries:

