Dictionary

To retrace one's steps.

Example: I dropped my sunglasses and had to backtrack to find them.

To repeat or review work already done.

Example: If we backtrack through this problem, maybe we can figure out where we went wrong.

To taxi down an active runway in the opposite direction to that being used for takeoff.

Example: Speedbird One: enter and backtrack Runway 27 Left.

To exercise a racehorse around the racetrack in the opposite direction to that in which races are run.

(countable, uncountable) 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.