The most common and most likely answer to this crossword clue is the 8 letter word DO-SI-DO
I've seen this crossword clue in Financial Times
D
O
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S
I
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D
O
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 DO-SI-DO mean?
DO-SI-DO noun- A move in square dancing in which two dancers face each other, then step forward and left until they have right shoulders adjacent, then move to a position where they are back to back, then move to have left shoulders adjacent, then return to facing each other.
- A sofa, open carriage, etc. constructed so that the occupants sit back to back.