Καλησπέρα!
Αυτό παρακάτω;
https://en.wikipedia.org/wiki/Roll_(gymnastics)
Για τη μεταφορική σημασία:
"What followed a week later was one of the biggest U-turns — or kolotoumba meaning “somersault” — of the crisis."
Spiegel, P. (2015), 'Year in a word: Oxi', Financial Times, 23 December