Tiny explosive device? One delivered after the war (4,6)
I believe the answer is:
baby boomer
'the war' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'tiny explosive device? one delivered' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'me' (a setter might use 'one' to humourously mean 'me') and 'me' is present in the answer.
'explosive device?' could be 'a' and 'a' is present in the answer.
This explanation may well be incorrect...
'after' is the link.
Can you help me to learn more?
(Other definitions for baby boomer that I've seen before include "one arriving in a crowd" , "Joey" , "One of many born after WW2" , "Person born shortly after WWII" , "born just after the war?" .)