Incomplete painting, one framed by friend (7)
I believe the answer is:
partial
'incomplete' is the definition.
('partial' can be similar in meaning to 'incomplete')
'painting one framed by friend' is the wordplay.
'painting' becomes 'art' (I've seen this before).
'one' becomes 'i' (Roman numeral).
'framed by' means one lot of letters goes inside another.
'friend' becomes 'pal' (pal is a kind of friend**).
'art'+'i'='arti'
'arti' going within 'pal' is 'PARTIAL'.
(Other definitions for partial that I've seen before include "Not complete, or with strong liking for" , "Incomplete; biassed" , "Biased or unfair" , "Not complete or total, maybe an eclipse" , "Keen" .)