Crossword Genius

Noticed it was cutting edge (3)

Ross

I believe the answer is:

saw

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This could be a double definition.

'noticed' is the first definition.
(I've seen this in another clue)

'it was cutting edge' is the second definition.
The definition suggests a singular noun which matches the answer.

Can you help me to learn more?

(Other definitions for saw that I've seen before include "Old saying - cutting kind" , "Viewed; adage" , "Observed the old saying?" , "Noticed - tool" , "Observed; tool" .)

I've seen this clue in The Mirror.
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