triple lock

Short definition from Wiktionary

Noun

1. 1
   A policy whereby the state pension is increased every year to match either price inflation, earnings growth, or a third fixed rate, whichever is highest.
2. 2
   The requirement for approval by the Irish government, the Dáil (parliament), and the United Nations prior to any overseas military action by Irish defence forces.
3. 3
   Alternative form of triple lock.