Divide part that's got dry on the inside (6)
I believe the answer is:
bisect
'divide' is the definition.
(I know that bisect is a more specific form of cut)
'part that's got dry on the inside' is the wordplay.
I cannot really understand how this works, but
'dry' could be 'sec' ('dry' in French - used for wine) and 'sec' is found within the answer.
'part' could be 'bit' (both mean a piece of something) and 'bit' is located in the leftover letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bisect that I've seen before include "Cut twenty [IN TWO]" , "Split exactly in two" , "Halve (angle)" , "cross" , "equally split" .)