: to annul by recalling or taking back: as
a : to destroy the effectiveness of (a will) by executing another or by an act of destruction (as tearing or crossing out)
b : to put an end to (a trust)
c : to withdraw (an offer) esp. before acceptance
d : to withdraw (acceptance of goods) by refusing to keep goods because of nonconformity see also rejection
e : to take back (as a license or a grant of parole or probation) esp. because of misconduct
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.