Black's Law Dictionary (2nd edition)dictionaries

Quietus

In old English law. Quit; acquitted; discharged. A word used by the clerk of the pipe, and auditors in the exchequer, in their acquittances or discharges given to accountants; usuaily concluding with an abinde recessit quietus, (hath gone quit thereof,) which was called a “quietus est” CowelL

Source: Black’s Law Dictionary 2nd Ed (1910)