The phrase "first summit" refers to the initial or earliest meeting or gathering between important leaders or representatives from different groups or countries to discuss and resolve issues or make important decisions. Full definition
State Senator Jeff Klein (D - Bronx / Westchester) will host New York's first summit on synthetic cannabinoids and convene top elected officials, health experts and city and state agency officials to discuss the K2 epidemic and gain insight into the frontlines of the battle against this dangerous substance. (thebronxchronicle.com)
«It's fitting that the two climbers who first summited Earth's highest mountain, Edmund Hillary and Tenzing Norgay, now have their names on this new Everest.» (astrobiology.nz)
This would be Cuomo's first summit on government transparency, and his call comes just before «Sunshine Week,» a designated period for celebrating government openness. (politico.com)