Glossy oil an awful pink (8)
I believe the answer is:
magnolia
'pink' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'glossy oil an awful' is the wordplay.
'glossy' becomes 'mag' (I've seen this in other clues).
'awful' is an anagram indicator.
'oil'+'an'='oilan'
'oilan' anagrammed gives 'nolia'.
'mag'+'nolia'='MAGNOLIA'
Can you help me to learn more?
(Other definitions for magnolia that I've seen before include "Flower" , "Early-blooming tree; off-white colour" , "purplish" , "Tree with large scented flowers" , "plant" .)