(chiefly in military contexts) a turn made so as to face the opposite direction
he did an about-face and marched out of the tent
turn so as to face the opposite direction
protestors retreated, about-faced, and resumed chanting
(chiefly in military contexts) a turn made so as to face the opposite direction
he did an about-turn and marched out of the tent
turn so as to face the opposite direction
suddenly he about-turned and saluted again