Crossword Genius

Give an edge (7)

Ross

I believe the answer is:

sharpen

'give an edge' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for sharpen that I've seen before include "Put a keen edge on" , "Raise pitch of" , "Make pointed" , "Put a point on" , "Make more acute" .)

I've seen this clue in The Wall Street Journal.
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