The most common and most likely answer to this crossword clue is the 6 letter word THRACE
I've seen this crossword clue in The Times
T
H
R
A
C
E
More clues leading to the result THRACE
- Land once having little rain, hard to penetrate
- Most of the people in old Balkan land
- Most of the people in ancient Balkan country
- Vehicle turned into the ancient region
- Endless confounded traps alternating current and past state
- The car breaking down in the country a long time ago
- Most of the people in an ancient kingdom
- Old country hotel surrounded by suspicion
- Vehicle going back into the ancient land
- Car club in the old country
Buddy explains!
The straight part
We know that "an ancient kingdom" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case an ancient kingdom = thrace.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.