familiar term for an ass, 1785, alsodonky, donkie, originally slang or dialectal, of uncertain origin. Perhaps a diminutive fromdun"dull gray-brown" (from Middle Englishdonned, past participle ofdonnen"to lose color, fade, from Old Englishdunnian). CompareDunning, name of a (dun) horse (...
The word Bimbo is actually derived from an Italian word for a baby boy (a baby girl would be a bimba), when it first emerged in American slang in the early 1900s, bimbo was used both of an unimportant or insignificant man, and a menacing, brutish dolt or bully. No one is...