Take very small bites (6)
I believe the answer is:
nibble
'take very small bites' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for nibble that I've seen before include "Take small bites of" , "Bite gently and eat a little at a time" , "Take tiny bites" , "Bite off very small pieces" , "express tentative interest" .)