A light wine, adequate for what’s required of it (8)
I believe the answer is:
portable
'a light' is the definition.
(thesaurus)
'wine adequate for what's required of it' is the wordplay.
I cannot really see how this works, but
'wine' could be 'table' (table wine is a kind of wine) and 'table' is found in the answer.
'of' could be 'o' and 'o' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for portable that I've seen before include "easy to bear?" , "desirable type of pension" , "radio" , "Handy - lightweight" , "Easily transported" .)