The most common and most likely answer to this crossword clue is the 6 letter word LOPPED
I've seen this crossword clue in Financial Times
L
O
P
P
E
D
More clues leading to the result LOPPED
Buddy explains!

The straight part
We know that "sliced" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sliced = lopped.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 LOPPED mean?
LOPPED verb- (usually with off) To cut off as the top or extreme part of anything, especially to prune a small limb off a shrub or tree, or sometimes to behead someone.
- To hang downward; to be pendent; to lean to one side.
- To allow to hang down.