"it Ain't Over Till the __ Sings"
This page is the CodyCross answer for the clue below from Wild West, Group 432, Puzzle 4 (Sundance Kid).
Question is: "it Ain't Over Till the __ Sings"
and the answer is: FATLADY
Word Meaning:
FAT LADY — (dated, now offensive) A woman of unusually large body size formerly exhibited as a circus sideshow attraction.
Definitions from Wiktionary.