Runner's sharp pain in the side (6)

I believe the answer is:

stitch

(Other definitions for stitch that I've seen before include "Use a needle - pain in the side" , "Perform final act in theatre" , "Link, loop or knot made in knitting or sewing" , "Tack; pain in side" , "Sharp pain in the side brought on by running" .)

I've seen this clue in The Sun.

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