From Wiktionary, the free dictionary
From flag ship
flagship (plural flagships
( nautical , military ) ship occupied by the fleet 's commander (usually an admiral ); it denotes this by flying his flag .
2022 April 21, Neil MacFarquhar, Alina Lobzina, “With sunken warship, Russian disinformation faces a test.”, in The New York Times [1] →ISSN After Russia’s flagship in the Black Sea, the Moskva, sank last week, the authorities said that the entire crew of more than 500 had been rescued.
( nautical ) important out of a group, e.g. a nation's navy or company's fleet.( by extension, often attributive ) important one out of a related group.
Synonyms: chief primary principal showcase The retail company's store in London is their flagship .
2015 October 20, Stuart Dredge, “Google Nexus 5X and Nexus 6P review roundup: impressive Android flagships”, in The Guardian [2] Ars Technica’s Ron Amadeo considered the two smartphones together, and claimed them worthy flagships for Android: [ …]
2017 October 2, Jess Cartner-Morle, “Stella McCartney lays waste to disposable fashion in Paris”, in The Guardian [3] Next year, Stella McCartney’s London flagship store will move from Bruton Street to a landmark Old Bond Street location. The move is the most prominent symbol of the label’s strong financial results.
2022 January 12, Paul Stephen, “Network News: Vere admits to Lords: IRP lacks information”, in RAIL , number 948 , page 10 :Transport Minister Baroness Vere has conceded that the Government does not yet know how its flagship £96 billion Integrated Rail Plan "will actually work on the ground".
ship occupied by the fleet's commander
Albanian: please add this translation if you can
Arabic: سَفِينَةُ الْقَائِد f ( safīnatu l-qāʔid ) , سَفِينَةُ الْقِيَادَة f ( safīnatu l-qiyāda )
Armenian: ֆլագմանական նավ ( flagmanakan nav ) , ֆլագման (hy) ( flagman )
Belarusian: фла́гманскі карабе́ль m ( fláhmanski karabjélʹ ) , фла́гман m ( fláhman )
Bulgarian: фла́гмански ко́раб m ( flágmanski kórab ) , фла́гман m ( flágman )
Chinese:
Mandarin: 旗艦 / 旗舰 (zh) ( qíjiàn )
Czech: vlajková loď (cs) f
Danish: flagskib n
Dutch: vlaggenschip (nl) n
Esperanto: ĉefŝipo
Estonian: lipulaev (et)
Finnish: lippulaiva (fi)
French: navire amiral (fr) m bateau amiral (fr) m vaisseau amiral (fr) m
Georgian: საფლანგო ხომალდი ( saplango xomaldi ) , ფლაგმანი (ka) ( plagmani )
German: Flaggschiff (de) n
Greek:
Ancient: στρατηγίς ναῦς f ( stratēgís naûs )
Modern: ναυαρχίδα (el) f ( navarchída )
Hebrew: אוניית דגל
Hungarian: zászlóshajó (hu)
Icelandic: flaggskip n
Irish: bratlong f
Italian: nave ammiraglia f ammiraglia (it) f principale (it)
Japanese: 旗艦 (ja) ( きかん, kikan )
Kazakh: флагман ( flagman )
Korean: 기함(旗艦) (ko) ( giham )
Kyrgyz: флагман ( flagman )
Latvian: admirāļa kuģis m flagmanis m
Lithuanian: flagmanas (lt) m
Low German:
German Low German: Flaggschipp n
Norman: amitha m
Norwegian:
Bokmål: flaggskip n
Nynorsk: flaggskip n
Polish: okręt flagowy m
Portuguese: navio-almirante (pt) m capitânia (pt) m or f nau capitânia f
Romanian: navă-amiral f
Russian: фла́гманский кора́бль m ( flágmanskij koráblʹ ) , фла́гман (ru) m ( flágman )
Serbo-Croatian:
Cyrillic: адмиралски брод m
Roman: admiralski brod
Slovak: vlajková loď f
Slovene: poveljniška ladja f
Spanish: buque insignia m capitana f nave capitana f buque almirante m
Swedish: flaggskepp (sv) n
Turkish: amiral gemisi (tr) , bayrak gemisi (tr)
Ukrainian: фла́гманський корабе́ль m ( fláhmansʹkyj korabélʹ ) , фла́гман m ( fláhman )
Vietnamese: soái hạm (vi)
flagship (third-person singular simple present flagships present participle flagshipping simple past and past participle flagshipped
To act as a flagship for. 
