The most common and most likely answer to this crossword clue is the 7 letter word JOINTED
I've seen this crossword clue in The Guardian
J
O
I
N
T
E
D
Buddy explains!

The straight part
We know that "butchered" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case butchered = jointed.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 JOINTED mean?
JOINTED adjective- Having joints.
- (of an entertainment venue) Extremely full of people, packed, chockablock.
- To unite by a joint or joints; to fit together; to prepare so as to fit together
- To join; to connect; to unite; to combine.
- To provide with a joint or joints; to articulate.
- To separate the joints; of; to divide at the joint or joints; to disjoint; to cut up into joints, as meat.
- To fit as if by joints; to coalesce as joints do.