Does it mean "main"?
Leaving the euro is one of the FN's standard-bearing policies, both a mark of its anti-establishment stance that attracts voters angry with globalization, and a likely obstacle to its quest for power in a country where a majority oppose a return to the franc.
Source: http://www.cnbc.com/2017/03/26/france-marine-le-pen-euro-exit-wouldnt-be-chaos.html