Second city to receive an atomic bomb (8)
I believe the answer is:
nagasaki
'second city to receive an atomic bomb' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for nagasaki that I've seen before include "Second city to receive an atomic bomb" , "Second city to receive an atom bomb" , "Japanese city where 2nd atomic bomb fell" , "Second city to suffer an atomic bomb" , "Kyushu city" .)