British sailor raised capital (4)
I believe the answer is:
baku
'capital' is the definition.
(Baku is an example)
'british sailor raised' is the wordplay.
'british' becomes 'uk' (I've seen this in other clues).
'sailor' becomes 'ab' (abbreviation for able seaman).
'raised' shows that the letters should be reversed in order.
'uk'+'ab'='ukab'
'ukab' in reverse letter order is 'BAKU'.
(Other definitions for baku that I've seen before include "Capital of Azerbaijan on shore of Caspian Sea" , "Azerbaijan's capital" , "Caspian Sea port" , "Capital city of Azerbaijan" .)