bavian
/ˈbeɪvɪən/(also baviaan, bawian, babiaan)
noun
1Usually with capital initial. A character in a morris dance representing a baboon, and typically engaging in wild, foolish, or lewd behaviour.
2A baboon; specifically (South African ) the chacma, Papio ursinus. Also figurative ( derogatory ): a fool, an idiot. Compare babion. Now rare.
Origin
Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From Dutch baviaan, †baviaen baboon.