The most common and most likely answer to this crossword clue is the 10 letter word PILLOWCASE
I've seen this crossword clue in The Guardian
P
I
L
L
O
W
C
A
S
E
More clues leading to the result PILLOWCASE
Buddy explains!

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 PILLOWCASE mean?
PILLOWCASE noun- A washable, easily removable cloth cover for pillows.