The most common and most likely answer to this crossword clue is the 7 letter word GIBBOUS
G
I
B
B
O
U
S
Buddy explains!
The straight part
We know that "description of some moonshine" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case description of some moonshine = gibbous.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 GIBBOUS mean?
GIBBOUS adjective- Characterized by convexity; protuberant.
- Phase of moon or planet between first quarter and full or between full and last quarter.
- Humpbacked.