RhymeZone: backflip definitions

Definitions of backflip:

noun: (gymnastics) An act of rotating one's body 360 degrees in the backward direction.
noun: (by extension) a total reversal in policy or opinion; a volte-face, a U-turn.
verb: To perform a backflip (rotation of body).
verb: To completely reverse a policy or opinion; perform a U-turn.

(Definitions from Wiktionary)