Oily type of resin from Fine Arts (3)
I believe the answer is:
fat
'oily' is the definition.
('fat' can be similar in meaning to 'oily')
'resin from fine arts' is the wordplay.
'from' suggests deleting specific letters.
'fine'+'arts'='finearts'
'finearts' with 'resin' taken out is 'FAT'.
'type of' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for fat that I've seen before include "eg Lard" , "Obese, having spare tyre etc" , "Naturally oily substance" , "Substantial" , "Obese, overweight" .)