Complaining about parking becomes addictive (8)
I believe the answer is:
gripping
'addictive' is the definition.
Although both the answer and definition are adjectives, I can't see how they can define each other.
'complaining about parking' is the wordplay.
'complaining' becomes 'griping' (griping is a kind of complaining).
'about' means one lot of letters goes inside another.
'parking' becomes 'p'.
'griping' going around 'p' is 'GRIPPING'.
'becomes' is the link.
Can you help me to learn more?
(Other definitions for gripping that I've seen before include "Holding tightly" , "as one's vices may be" , "Suspenseful" , "Grasping" , "Enthralling" .)