The most common and most likely answer to this crossword clue is the 9 letter word ERUDITION
I've seen this crossword clue in The Daily Telegraph
E
R
U
D
I
T
I
O
N
More clues leading to the result ERUDITION
- Learning of nude riot, I panicked
- Knowledge of issue besetting game
- Regret in short cutting form of text in learning
- Learning game in issue
- I had got back into new routine of learning
- Knowledge of game put into publication
- Learning code in volume
- Learning game covered by issue
- Learning the 15-a-side game in book form
- Learning funny routine about policeman
Buddy explains!

The straight part
We know that "Learning" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case learning = erudition.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 ERUDITION mean?
ERUDITION noun- Profound knowledge, especially that based on learning and scholarship.