The most common and most likely answer to this crossword clue is the 9 letter word BLOODLUST
I've seen this crossword clue in Independent
B
L
O
O
D
L
U
S
T
Buddy explains!

The straight part
We know that "Desire for Gore" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case desire for gore = bloodlust.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 BLOODLUST mean?
BLOODLUST noun- A desire for bloodshed and carnage, often aroused in the heat of battle and leading to uncontrolled slaughter and torture.