Meaning of ABOU in English

ABOU

t-turn UK and ANZ, [US and ANZ] about-face [noun] [C] - a change of direction or of someone's opinion or way of actingI'd only gone a little way down the street when I remembered I hadn't locked the door, so I made a quick about-turn and ran back to the house.This is the Government's second about-turn (= change of opinion) on the issue.

Cambridge English vocab.      Кембриджский английский словарь.