passerelle
n.β Β«The Commission hopes countries will agree to press on with bits that donβt need a new treaty. For instance, getting rid of the national vetoes covering criminal justice. It can be done using what is known as a “passerelle” in the treaty of Amsterdam.…Itβs the jargon name given to the clause that allows the EU to increase its power without a new treaty. Perhaps “ascenseur” would be better.Β» ββEurope diary: Constitutional steps” by Mark Mardell BBC News May 18, 2006. (source: Double-Tongued Dictionary)