1. The release of political prisoners under a general pardon, or a person or group of people from criminal liability for a particular action; for example, the occasional amnesties in Britain for those who surrender firearms that they hold illegally. 2. International Human-rights organization established in the UK 1961 to campaign for the release of political prisoners worldwide. It has 700,000 members, and section offices in 43 countries. Amnesty International is politically unaligned. The organization was awarded the Nobel Peace Prize 1977.