Part of frame CGI bear ruined (7)
I believe the answer is:
ribcage
'part of frame' is the definition.
'ribcage' can be an answer for 'frame' (I have seen 'skeletal frame' mean 'ribcage' so perhaps 'frame' could also mean 'ribcage'). I'm not certain of the 'part of' bit.
'cgi bear ruined' is the wordplay.
'ruined' indicates anagramming the letters.
'cgi'+'bear'='cgibear'
'cgibear' with letters rearranged gives 'RIBCAGE'.
Can you help me to learn more?
(Other definitions for ribcage that I've seen before include "organ case" , "protects one's heart" , "(Bones in) chest wall" , "bony frame" , "part of chest" .)