The most common and most likely answer to this crossword clue is the 6 letter word BILLOW
B
I
L
L
O
W
More clues leading to the result BILLOW
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 BILLOW mean?
BILLOW noun- A large wave, swell, surge, or undulating mass of something, such as water, smoke, fabric or sound
- To surge or roll in billows.
- To swell out or bulge.