Noon when USA bombed capital (6)
I believe the answer is:
nassau
'capital' is the definition.
(Nassau is an example)
'noon when usa bombed' is the wordplay.
'noon' becomes 'n'.
'when' becomes 'as'.
'bombed' indicates anagramming the letters.
'usa' is an anagram of 'sau'.
'n'+'as'+'sau'='NASSAU'
(Other definitions for nassau that I've seen before include "Capital of the Bahamas" , "city" , "Caribbean resort" , "Bahamian capital" , "Bahamas cap." .)