Sun was covering right film (4,4)
I believe the answer is:
star wars
'film' is the definition.
(I've seen this before)
'sun was covering right' is the wordplay.
'sun' becomes 'star' (I've seen this before).
'covering' means one lot of letters goes inside another.
'right' becomes 'r' (common abbreviation).
'was' placed around 'r' is 'wars'.
'star'+'wars'='STAR WARS'
(Other definitions for star wars that I've seen before include "Picture" , "Movie" , "Space fiction film - SDI" , "Strategic Defense Initiative (US) - sci-fi film" , "SF film" .)