Metropolis (7)
'metropolis' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for capital that I've seen before include "Money - chief city" , "Metropolis" , "liquid assets" , "It's jolly good in the great city" , "City - finance - very good" .)
'metropolis' is the definition.
(a metropolis is a large city)
This is the entire clue.
(Other definitions for city that I've seen before include "Urban settlement" , "See 17" , "Coventry, say" , "Large conurbation" , "Tokyo, for example" .)