The most common and most likely answer to this crossword clue is the 7 letter word DUKEDOM
D
U
K
E
D
O
M
Buddy explains!

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 DUKEDOM mean?
DUKEDOM noun- A region ruled by a duke or duchess; a duchy.
- The rank or title of a duke.