To put an end to; to do away with.
To block a process or function.
To annul by an authoritative act; to abolish by the authority of the maker or her or his successor; to repeal; — applied to the repeal of laws, decrees, ordinances, the abolition of customs, etc.
To withdraw or repudiate a statement or opinion formerly expressed, especially formally and publicly.
To give a new cant (slant, angle) to something, in particular railway track on a curve.