Chuck Norris's heading for paradise (6)
I believe the answer is:
heaven
'paradise' is the definition.
(synonyms)
'chuck norris's heading' is the wordplay.
'chuck' becomes 'heave' (heaving is a kind of chucking).
'heading' says to take the initial letters (head could mean the top letter).
The first letter of 'norris' is 'n'.
'heave'+'n'='HEAVEN'
'for' acts as a link.
(Other definitions for heaven that I've seen before include "State of bliss" , "State of happiness" , "Realm of eternal bliss" , "Abode of the gods" , "Paradise - supreme happiness" .)