grace n1 : a special favor
: privilege [considered by many authorities to be a matter of and not of right "The Mentally Disabled and the Law "]
2 a : a temporary exemption
b : the prerogative of mercy exercised (as by a chief executive) or granted in the form of equitable relief
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.