flagship

n. ship which carries the commander of a fleet; something which is the best or considered the best of its kind

A flagship is the ship used by the commanding officer of a group of naval ships. The term originates from the custom of the commanding officer (usually, but not always, a flag officer) to fly a distinguishing flag.Used in this way, "flagship" is fundamentally a temporary designation; the flagship is wherever the admiral is flying his flag. However, admirals have always needed additional facilities; a meeting room large enough to hold all the captains of the fleet, and a place for the admiral's staff to make plans and draw up orders.
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Noun
1. the chief one of a related group; "it is their flagship newspaper"
(hypernym) thing
2. the ship that carries the commander of a fleet and flies his flag
(hypernym) ship

flagship /'flægʃip/
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