The most common and most likely answer to this crossword clue is the 8 letter word WRESTLED
I've seen this crossword clue in The Daily Telegraph
W
R
E
S
T
L
E
D
Buddy explains!
The straight part
We know that "Fought" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fought = wrestled.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 WRESTLED mean?
WRESTLED verb- To contend, with an opponent, by grappling and attempting to throw, immobilize or otherwise defeat him, depending on the specific rules of the contest
- To struggle or strive
- To take part in a wrestling match with someone
- To move or lift something with difficulty
- To throw a calf etc in order to brand it
- To fight.