Special delivery from wife to Ronald: firearm? (7)
I believe the answer is:
wrongun
'special delivery' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'wife to ronald firearm?' is the wordplay.
'wife' becomes 'w' (abbreviation).
'to ronald' becomes 'ron' (I've seen this in other clues).
'firearm?' becomes 'gun' (firearm is a kind of gun).
'w'+'ron'+'gun'='WRONGUN'
'from' acts as a link.
Can you help me to learn more?
(Another definition for wrongun that I've seen is " Rogue".)