The most common and most likely answer to this crossword clue is the 8 letter word MEMBERED
M
E
M
B
E
R
E
D
Buddy explains!
The straight part
We know that "in parts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in parts = membered.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MEMBERED mean?
MEMBERED adjective- (in combination) Having a specified number of members.
- (in combination) Having limbs.
- (of a bird) Having legs of a different tincture from that of the body.