GUENON Meaning of GUENON in English [ gə'nɒn ]■ noun a long-tailed African monkey of a group including the vervet and patas monkeys. [Genus Cercopithecus : several species.]OriginC19: from Fr., of unknown origin. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004