A flagship is the most important ship in a fleet of ships, especially the one on which the commander of the fleet is sailing.
N-COUNT
王牌;主打產品;旗艦產品
The flagship of a group of things that are owned or produced by a particular organization is the most important one.
例句
The hospital has been the government's flagship, leading the health service reforms...這家醫院一直是政府的旗艦機構，引領著醫療服務的改革。The company plans to open a flagship store in New York this month.公司計劃本月在紐約開一家旗艦店。