Chafes away in guitar bars (5)

I believe the answer is:

frets

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

This clue could be a double definition.

'chafes away in guitar' is the first definition.
'frets' can be an answer for 'chafes' ('fret' can be a synonym of 'chafe'). I'm not certain of the 'away in guitar' bit.

'bars' is the second definition.
(I've seen this before)

Can you help me to learn more?

(Other definitions for frets that I've seen before include "bars" , "Worries; ornamental networks" .)

I've seen this clue in the Sydney Morning Herald.

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.