<p><strong>Noun:</strong></p><ul><li>A ship carrying the flag officer or the commander of a fleet, squadron, or the like, and displaying the officer's flag.</li><li>The main vessel of a shipping company.</li><li>Any of the best or largest ships or airplanes operated by a passenger line.</li><li>The best or most important one of a group or system: This store is the flagship of our retail chain.</li></ul><p><strong>Adjective:</strong></p><ul><li>Being or constituting a flagship.</li></ul>