The most common and most likely answer to this crossword clue is the 7 letter word TUFTING
I've seen this crossword clue in Financial Times
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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.
Crossword Answer definitions
TUFTING verb- To provide or decorate with a tuft or tufts.
- To form into tufts.
- To secure and strengthen (a mattress, quilt, etc.) with tufts.
- To be formed into tufts.
- A tuft.