obrtati

1. to turn; to rotate; to turn over
   Polako je obrtao ključ u bravi. — He was slowly turning the key in the lock.
   Ona nervozno obrće stranice knjige. — She is nervously turning the pages of the book.
2. (obrtati se) to turn around; to look back
   Ljudi su se obrtali za njom na ulici. — People turned around to look at her in the street.
3. (of money) to turn over; to keep in circulation
   Ta firma obrće milione evra godišnje. — That company turns over millions of euros a year.
4. (of a situation) to reverse; to turn around
   Uvek obrće priču u svoju korist. — He always twists the story to his advantage.

In everyday speech okretati is more common; the perfective is obrnuti.