The most common and most likely answer to this crossword clue is the 8 letter word BEETLING
I've seen this crossword clue in The Daily Telegraph
B
E
E
T
L
I
N
G
More clues leading to the result BEETLING
Buddy explains!

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 BEETLING mean?
BEETLING verb- To move away quickly, to scurry away.
- To loom over; to extend or jut.
- To beat with a heavy mallet.
- To finish by subjecting to a hammering process in a beetle or beetling machine.
- The process by which fabrics, etc. are beetled, or beaten with a mallet.
- Jutting or protruding, especially of a person's brows.