The most common and most likely answer to this crossword clue is the 6 letter word BEETLE
I've seen this crossword clue in The Times
B
E
E
T
L
E
More clues leading to the result BEETLE
- Scowling schoolboy
- Insect crusher
- British support returning the French bug
- Insect stalked periodically by another
- Maybe Paul’s articulated vehicle
- Mallet for Stalky’s friend for sort of drive
- Insect – an insect I shooed from part of roof
- One insect let out another
- Scoot along in a car
- German car in which soundly to defeat the French
Buddy explains!

The straight part
We know that "Scowling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case scowling = beetle.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 BEETLE mean?
BEETLE noun- A small car, the Volkswagen Beetle (original version made 1938–2003, similar models made 1997–2010 and since 2011)
- Any of numerous species of insect in the order Coleoptera characterized by a pair of hard, shell-like front wings which cover and protect a pair of rear wings when at rest.
- A game of chance in which players attempt to complete a drawing of a beetle, different dice rolls allowing them to add the various body parts.
- To move away quickly, to scurry away.
- To loom over; to extend or jut.
- Protruding, jutting, overhanging. (As in beetle brows.)
- A type of mallet with a large wooden head, used to drive wedges, beat pavements, etc.
- A machine in which fabrics are subjected to a hammering process while passing over rollers, as in cotton mills; a beetling machine.
- To beat with a heavy mallet.
- To finish by subjecting to a hammering process in a beetle or beetling machine.