Sound of matchmaker’s cutting tool? (5)

I believe the answer is:

parer

'cutting tool?' is the definition.
(parer is a kind of cutting tool)

I can't explain the remainder of the clue.

(Other definitions for parer that I've seen before include "one prunes" , "One cuts" , "One shaving away edges" , "It's used to sharpen a pencil" , "Trimmer" .)

I've seen this clue in The Times.

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