Definition: The word 'Aaron's beard' refers to a figure or character from a work of literature, film, or other media who has a distinctive characteristic that is unique to them, such as their physical appearance, accent, mannerisms, or hairstyle.
The word 'beard', while widely used in English-speaking cultures, is not commonly seen in the context of literature. The term 'beard' refers to the hairline on the top of the head where hair typically grows from the scalp. In other words, it's a type of hair that can appear on different parts of the body, such as on the face.
In the literary world, a character might have a distinctive physical appearance due to their profession or background, like an artist, inventor, politician, etc. The term 'beard' is often used to describe this physical characteristic because it's a hallmark of someone's occupation or personal life.
Aaron's-beard