The most common and most likely answer to this crossword clue is the 7 letter word HUMERUS
I've seen this crossword clue in The Times
H
U
M
E
R
U
S
More clues leading to the result HUMERUS
- Part of arms firm seen from behind by drone
- Reporter's funny bone
- Component of arm certain to be rejected after stink
- Bone is concerning when turned over in organic material
- Bit of body odour of course repelled
- Part of skeleton? That sounds funny
- Bone I'm not sure is placed in earth
- Some member like 6, they say
- Bone queen buried in compost
- Organic material covering edges of ear bone
Buddy explains!

The straight part
We know that "Part of skeleton" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of skeleton = humerus.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 HUMERUS mean?
HUMERUS noun- The bone of the upper arm.