The most common and most likely answer to this crossword clue is the 6 letter word HISPID
I've seen this crossword clue in Financial Times
H
I
S
P
I
D
More clues leading to the result HISPID
Buddy explains!
The straight part
We know that "hairy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hairy = hispid.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 HISPID mean?
HISPID adjective- (obsolete outside biology) Covered in short, stiff hairs; bristly.