The act of one who, or that which, backtracks; a retracing of one's steps.
The usage of a runway as a taxiway, especially at private strips and smaller airports.
The act of building all possible solutions to a problem incrementally, abandoning any candidate solution if it cannot lead to a valid solution.
The act of turning about so as to face in the opposite direction
A reversal of a decision or opinion etc; a change of mind or flip-flop
A merry-go-round.