acquittance

n. exoneration, pardon; discharge from debt; document evidencing discharge from debt

(v. t.)
To acquit.
  

(n.)
The clearing off of debt or obligation; a release or discharge from debt or other liability.
  

(n.)
A writing which is evidence of a discharge; a receipt in full, which bars a further demand.
  

Noun
1. a legal document evidencing the discharge of a debt or obligation
(synonym) release
(hypernym) legal document, legal instrument, official document, instrument
(classification) law, jurisprudence