Crossword Genius

Manuscript containing silver edges (8)

Ross

I believe the answer is:

margents

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'edges' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'manuscript containing silver' is the wordplay.
'manuscript' becomes 'ms' (abbreviation for manuscript).
'containing' is an insertion indicator.
'silver' becomes 'argent' (synonyms).
'ms' enclosing 'argent' is 'MARGENTS'.

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