What is the Irish expression Narrow Back?

"Narrow Back" is an Irish expression that refers to a person, usually a woman, who has a slim figure. The term is often used in an affectionate or admiring way and is not typically considered derogatory or offensive. It can also be used in a more general sense to describe someone who is thin or has a narrow back, regardless of gender.

Example:

* "She's a lovely girl, with a narrow back and long hair."

* "He's a bit of a narrow-back himself, isn't he?"