Bite, eating for instance, nut (6)
I believe the answer is:
cashew
'nut' is the definition.
(cashew is a kind of nut)
'bite eating for instance' is the wordplay.
'bite' becomes 'chew' (chew is a kind of bite**).
'eating' indicates putting letters inside.
'for instance' becomes 'as'.
'chew' enclosing 'as' is 'CASHEW'.
(Other definitions for cashew that I've seen before include "Kind of nut" , "Kidney-shaped nut of tropical tree" , "Kidney shaped nut" , "Chew as you would this nut" , "Edible nut" .)