Garter, running or saddle? (6)

I believe the answer is:

stitch

(Other definitions for stitch that I've seen before include "Application of needle produces this" , "A sewer may produce such" , "Sharp pain in side of body caused by exercise" , "Use a needle - pain in the side" , "Sudden pain in side after exercise" .)

I've seen this clue in The Guardian.

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