Features about the coreless apples? (6)
I believe the answer is:
eaters
'apples?' is the definition.
(informal term for an eating apple)
'features about the coreless' is the wordplay.
'features' becomes 'ears'.
'about' indicates putting letters inside.
'coreless' means to remove the middle letters.
'the' with its centre removed is 'te'.
'ears' going around 'te' is 'EATERS'.
(Other definitions for eaters that I've seen before include "Consumers of meals" , "Class of apples" .)