Piece inside hard fruit for hog (8)
I believe the answer is:
gourmand
'hog' is the definition.
(thesaurus)
'piece inside hard fruit' is the wordplay.
'piece' becomes 'man' (man can mean a chess piece).
'inside' is an insertion indicator.
'hard fruit' becomes 'gourd' (gourd is a kind of fruit. I am not sure about the 'hard' bit.).
'man' going into 'gourd' is 'GOURMAND'.
'for' is the link.
Can you help me to learn more?
(Other definitions for gourmand that I've seen before include "Person devoted to eating and drinking" , "Excessive eater and drinker" , "Hearty feeder" , "Food connoisseur" , "lover of good food" .)