1. Mil.
a. a command, given to a soldier or soldiers at attention, to turn the body about toward the right so as to face in the opposite direction.
b. the act of so turning in a prescribed military manner.
2. rightabout (def. 2).
3. any complete reversal, as of conduct or opinion.
Also, rightabout-face, right-about-face .
[ 1805-15 ]