Webster's Revised Unabridged Dictionary · 1913

Right-about

Right-about , noun

[Right, adv. + about, adv.]

A turning directly about by the right, so as to face in the opposite direction; also, the quarter directly opposite; as, to turn to the right-about.
Collocations (1)
To send to the right-about , to cause to turn toward the opposite point or quarter; -- hence, of troops, to cause to turn and retreat. [Colloquial] — Sir W. Scott