The most common and most likely answer to this crossword clue is the 7 letter word GNASHED
I've seen this crossword clue in Financial Times
G
N
A
S
H
E
D
More clues leading to the result GNASHED
Buddy explains!
The straight part
We know that "Ground" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ground = gnashed.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 GNASHED mean?
GNASHED verb- To grind (one's teeth) in pain or in anger.
- To grind between the teeth.
- To run away.