The most common and most likely answer to this crossword clue is the 7 letter word JAWBONE
I've seen this crossword clue in The Guardian
J
A
W
B
O
N
E
Buddy explains!
The straight part
We know that "part of body" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of body = jawbone.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 JAWBONE mean?
JAWBONE noun- The bone of the lower jaw; the mandible.
- Any of the bones in the lower or upper jaw.
- (singular or plural) A shaken musical instrument (an idiophone) made from the jawbone of an animal and shaken such that the teeth vibrate in their sockets to produce sound.
- To talk persistently in an attempt to persuade somebody to cooperate.