The monarchy witnessed a tool with cutting edge (5-3)

I believe the answer is:

crown-saw

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'a tool with cutting edge' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'the monarchy witnessed' is the wordplay.
'the monarchy' becomes 'crown'.
'witnessed' becomes 'saw' ('see' can be a synonym of 'witness').
'crown'+'saw'='CROWN-SAW'

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I've seen this clue in The Hindu.

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