Overview
Bimbo is slang for a conventionally attractive, sexualized, naive, and unintelligent woman. The term was originally used in the United States as early as 1919 for an unintelligent or brutish man.
As of the early 21st century, the "stereotypical bimbo" appearance became that of an attractive woman. It is often used to describe women who are blonde, have curvaceous figures, heavy makeup, and revealing clothing. It is commonly associated with "the dumb blonde" stereotype.
History
The word bimbo derives from the Italian bimbo, a masculine-gender term that means "little or baby boy" or "young (male) child" (the feminine form of the Italian word is bimba). Use of this term began in the United States as early as 1919, and was a slang word used to describe an unintelligent or brutish man.
From Wikipedia (CC BY-SA 4.0).