Sounded alarm over working name not now used for city (7)
I believe the answer is:
rangoon
'for city' is the definition.
(Rangoon is an example)
'sounded alarm over working name not now' is the wordplay.
I cannot quite understand how this works, but
'sounded' could be 'rang' (ringing is a kind of sounding) and 'rang' is found within the answer.
'over' could be 'on' (physically on top of) and 'on' is present in the answer.
'not' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'used' is the link.
Can you help me to learn more?
(Other definitions for rangoon that I've seen before include "Port and largest city of Burma" , "Burma's capital" , "Former name of the capital of Myanmar" , "Alternative name for Yangon" , "Asian capital" .)