sideache

plural sideaches · alternative side stitch

1. A pain in one's side.

   When one is in the race he tries to make a good showing, sideache or no sideache.

   2012, David Marx, The Salvation Shuffle, page 142

   2 more examples

   I stopped at the drugstore for the ice cream the twins wanted and when we got back to Otter Hill, we found the women in throes of anxiety over Mickey, who had suddenly come down with a violent sideache.

   1945, Ambrose Flack, Family on the Hill, page 125

   I've got this sideache you wouldn't believe, and you're the only excuse I'm going to get to quit running.

   1999, Catherine Farnes, Snow, page 33