More than very warm - fired! (4)
I believe the answer is:
shot
'fired' is the definition.
(shooting is a kind of firing)
'more than very warm' is the wordplay.
'more than' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'very warm' becomes 'hot' (I've seen this before).
's'+'hot'='SHOT'
Can you help me to learn more?
(Other definitions for shot that I've seen before include "Snap" , "[FILM]" , "Injection" , "description of some silk" , "Goal attempt" .)