With pins visible, a bleeder badly cut by mount (10)

I believe the answer is:

barelegged

I'm a little stuck... Click here to teach me more about this clue!

'cut by mount' is the definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I can't see?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for barelegged that I've seen before include "in a mini?" , "not wearing stockings?" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.