... from family, with awfully nice cover for grass (7)
I believe the answer is:
nepotic
'from family' is the definition.
I can't tell whether this defines the answer.
'awfully nice cover for grass' is the wordplay.
'awfully' is an anagram indicator.
'cover for' means one lot of letters goes inside another.
'grass' becomes 'pot' (cannabis).
'nice' anagrammed gives 'neic'.
'neic' going around 'pot' is 'NEPOTIC'.
'with' is the link.
Can you help me to learn more?
(Other definitions for nepotic that I've seen before include "Nice pot (anag.)" , "Favouring one's family" , "not looking beyond the family?" , "Keeping it in the family" , "Favouring one's relatives" .)