Definition of "flagship" in English

noun

1. (nautical, military) The ship occupied by the fleet's commander (usually an admiral); it denotes this by flying his flag.

2. (nautical) The ship regarded as most important out of a group, e.g. a nation's navy or company's fleet.

3. (by extension, often attributive) The most important one out of a related group.

   • The retail company's store in London is their flagship.

verb

1. To act as a flagship for.