Hello guys, I was watching the first episode of the first season of Game of Thrones and I am having a bit of a trouble in understanding the show because I am not used to listening british accent so often and also because the language used is ancient. that said, I come across this expression while watching it and I wasnt able to figure out the meaning from the context.
Here's the context:( If this context is not enough let me know)
The queen is coming and the guys are making themselves look pretty for the queen by shaving their beards and by cutting their hair.
A: It's for the queen, I bet. I hear she's a sleek bit of mink.
What would be a reasonable definition to this expression? does that expression mean a person who is on the top of the pyramid structure, in other words a high class person or sth like that?