This for definition of 'looker'? (8)
I believe the answer is:
eyeliner
'this for definition' is the definition.
The definition suggests a singular noun which matches the answer.
''looker'?' is the wordplay.
I cannot really see how this works, but
''looker'?' could be 'eye' (I've seen this in another clue) and 'eye' is present in the answer.
The remaining letters 'liner' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for eyeliner that I've seen before include "Item of 25dn" , "Dark marks left by this" , "highlight for look-out" , "Type of make-up" , "kind of cosmetic" .)