The most common and most likely answer to this crossword clue is the 5 letter word BILBO
I've seen this crossword clue in The Times
B
I
L
B
O
More clues leading to the result BILBO
Buddy explains!

The straight part
We know that "hobbit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hobbit = bilbo.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 BILBO mean?
BILBO noun- A device for punishment. See bilboes.
- A kind of sword with well-tempered and flexible blade, originally produced in Bilbao.