Fade away without bit of nourishment to eat (4)
I believe the answer is:
dine
'eat' is the definition.
(dining is a kind of eating)
'fade away without bit of nourishment' is the wordplay.
'fade away' becomes 'die' (I've seen this in other clues).
'without' indicates putting letters inside ('without' can be similar in meaning to 'outside').
'bit of' suggests taking the first letters.
The initial letter of 'nourishment' is 'n'.
'die' going around 'n' is 'DINE'.
'to' is the link.
(Other definitions for dine that I've seen before include "Have an evening meal" , "Take meal" , "Have supper" , "Eat dinner" , "Eat with Enid?" .)