The most common and most likely answer to this crossword clue is the 6 letter word FOLIOS
F
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Buddy explains!
The straight part
We know that "Leaves" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case leaves = folios.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 FOLIOS mean?
FOLIOS noun- A leaf of a book or manuscript
- A page of a book, that is, one side of a leaf of a book.
- A page number. The even folios are on the left-hand pages and the odd folios on the right-hand pages.
- A sheet of paper folded in half.
- (books) A book made of sheets of paper each folded in half (two leaves or four pages to the sheet); hence, a book of the largest kind, exceeding 30 cm in height.
- A page in an account book; sometimes, two opposite pages bearing the same serial number.
- (19th to early 20th century) A leaf containing a certain number of words; hence, a certain number of words in a writing, as in England, in law proceedings 72, and in chancery, 90; in New York, 100 words.
- A wrapper for loose papers.