The most common and most likely answer to this crossword clue is the 5 plus 3 plus 6 letter word PAPUA NEW GUINEA
I've seen this crossword clue in Independent
P
A
P
U
A
N
E
W
G
U
I
N
E
A
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.