heel turn

noun6

1. •
   A ballroom dancing move in which the dancer steps backwards, shifts their weight on to the back foot, and turns on the heel of that foot while holding the other foot close and parallel to it.

   • The lady's step would then need to be drastically foreshortened, and would degenerate into a heel turn—not infrequent with beginners. — 1951
2. •
   A situation in which a wrestler previously identified as a hero changes to being considered a villain
3. •
   A situation in which someone changes from being a hero into a villain.
4. •
   An act of turning around abruptly, especially so that one faces the opposite direction.

   • And on he strode into the opposite dark / Till presently the harsh heel's turn, a spark / I' the stone,[…] — 1840
5. •
   (figurative) A radical change (of mind, opinion, etc.).
6. •
   A turn executed by shifting weight on to the heel(s).

   • Undoubtedly my old diagram was wrong in omitting to show cusps for the heel turns: […] — 1880