Fruit for sound couple? (4)
I believe the answer is:
pear
'fruit' is the definition.
(I know that pear is a type of fruit of Maloideae)
'sound couple?' is the wordplay.
'sound' shows a homophone (sound like).
'couple?' becomes 'pair' (synonyms).
'pair' sounds like 'PEAR'.
'for' acts as a link.
(Other definitions for pear that I've seen before include "Orchard fruit" , "Fruit tree" , "William, maybe" , "Fruit sounds like two of a kind" , "Cone-shaped fruit" .)