backflip /ˈbæk.flɪp/noun 2verb 2forms 3 noun2 •An act of rotating one's body 360 degrees in the backward direction.The gymnast performed a backflip on a trampoline. •A total reversal in policy or opinion.PM predicts water recycling backflips — 2007 verb2 •To perform a backflip (rotation of body). •To completely reverse a policy or opinion; perform a U-turn. formsbackflipped · backflipping · backflips