Fine fabric made of flax and grass (4)
I believe the answer is:
lawn
'fine fabric' is the definition.
(I've seen this in another clue)
'flax and grass' is the wordplay.
I cannot quite understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
The remaining letters 'law' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'made of' is the link.
Can you help me to learn more?
(Other definitions for lawn that I've seen before include "Smooth grass area, often in front of house" , "Cultivated and mowed grass" , "Expanse of grass" , "type of tennis" , "Fine cotton or smooth grass" .)