The most common and most likely answer to this crossword clue is the 8 letter word PETITION
I've seen this crossword clue in The Guardian
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More clues leading to the result PETITION
Buddy explains!
The straight part
We know that "round robin, perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case round robin, perhaps = petition.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 PETITION mean?
PETITION noun- A formal, written request made to an official person or organized body, often containing many signatures.
- A compilation of signatures built in order to exert moral authority in support of a specific cause.
- A formal written request for judicial action.
- A prayer; a supplication; an entreaty.
- To make a request to, commonly in written form.