Partially covered by green, I was screwing back for red, say? (4)
I believe the answer is:
wine
'red say?' is the definition.
(I know that red is a type of Wine)
'partially covered by green i was screwing back' is the wordplay.
I cannot really see how this works, but
'covered' could be 'in' (I've seen this in other clues) and 'in' is found in the answer.
The remaining letters 'we' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'for' acts as a link.
Can you help me to learn more?
(Other definitions for wine that I've seen before include "Fermented grape juice" , "Plonk" , "See 18" , "Alcoholic drink" , "Eg, Sauternes" .)