Film star catches first wave (8)
I believe the answer is:
superman
'wave' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'film star catches' is the wordplay.
'film' becomes 'perma' (I can't explain this - if you can you should give a lot more credence to this answer).
'star' becomes 'sun' (the Sun is a star).
'catches' indicates putting letters inside.
'perma' inserted within 'sun' is 'SUPERMAN'.
'first' is the link.
Can you help me to learn more?
(Other definitions for superman that I've seen before include "Nietzsche created" , "great guy" , "one with great abilities" , "Clark Kent" , "Comic book hero" .)