Crossword Genius

It has a gripping purpose in fencing (4)

Ross

I believe the answer is:

hilt

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But I can't explain it at all! Could you help me understand?

(Other definitions for hilt that I've seen before include "Handle of a sword or dagger" , "Handle of bladed weapon" , "Sword/dagger handle" , "One may back up to this" .)

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