The most common and most likely answer to this crossword clue is the 7 letter word CASEOUS
I've seen this crossword clue in The Times
C
A
S
E
O
U
S
Buddy explains!

The straight part
We know that "description of cheese?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case description of cheese? = caseous.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 CASEOUS mean?
CASEOUS adjective- Resembling cheese.