Fastening in accordance (4)

I believe the answer is:

cord

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

'fastening' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I can't see?

'in accordance' is the wordplay.
'in' indicates a hidden word.
'CORD' is hidden within 'accordance'.

Can you help me to learn more?

(Other definitions for cord that I've seen before include "Thin rope" , "Line of twisted fibres or threads" , "Small rope or thick string" , "Thin string" , "Small rope; flex" .)

I've seen this clue in The Mirror.

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.