Second-class liner damaged in city (6)
I believe the answer is:
berlin
'city' is the definition.
(Berlin is an example)
'second-class liner damaged in' is the wordplay.
'second class' becomes 'b' ().
'damaged' indicates anagramming the letters.
'in' indicates putting letters inside.
'liner' with letters rearranged gives 'erlin'.
'b' put into 'erlin' is 'BERLIN'.
(Other definitions for berlin that I've seen before include "capital city" , "Possibly Isaiah" , "Composer of White Christmas" , "Irving . . . . . . , great American song-writer" , "City once divided by wall" .)