To Reverse

1. (transitive) To turn something around so that it faces the opposite direction or runs in the opposite sequence.
2. (transitive) To turn something inside out or upside down.
3. (transitive) To transpose the positions of two things.
4. (transitive) To change totally; to alter to the opposite.
5. (obsolete, intransitive) To return, come back.
6. (obsolete, transitive) To turn away; to cause to depart.
7. (obsolete, transitive) To cause to return; to recall.
8. (law) To revoke a law, or to change a decision into its opposite.
9. (ergative) To cause a mechanism or a vehicle to operate or move in the opposite direction to normal.
10. (chemistry) To change the direction of a reaction such that the products become the reactants and vice-versa.
11. (rail transport, transitive) To place a set of points in the reverse position
12. (rail transport, intransitive, of points) to move from the normal position to the reverse position
13. To overthrow; to subvert.

(to turn something in the opposite): unreverse

(rail transport): normalise / normalize (transitive and intransitive)