›a change of direction: I'd only gone a little way down the street when I remembered I hadn't locked the door, so I made/did a quick about-turn.Changing directionChangingAdapting and modifying Adapting and attuning to somethingChanging frequently›a complete change of opinion or behaviour: This is the government's second about-turn on the issue.ChangingAdapting and modifying Adapting and attuning to somethingChanging frequentlyChanging your mind