The most common and most likely answer to this crossword clue is the 3 plus 9 letter word NEW BRUNSWICK
I've seen this crossword clue in The Daily Telegraph
N
E
W
B
R
U
N
S
W
I
C
K
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.