One stuck quietly in? (3)

I believe the answer is:

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

'one stuck' is the definition.
I can't tell whether this definition defines the answer.

'quietly in?' is the wordplay.
'quietly' becomes 'p' (musical symbol).
'p'+'in'='PIN'

Can you help me to learn more?

(Other definitions for pin that I've seen before include "Cashpoint code" , "Stick with flag placed in golf hole" , "Small pointed metal fastener" , "Sewer's aid" , "Fastener; brooch" .)

I've seen this clue in the Evening Standard.

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.