The most common and most likely answer to this crossword clue is the 4 letter word BOAB
I've seen this crossword clue in Independent
B
O
A
B
More clues leading to the result BOAB
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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 BOAB mean?
BOAB noun- Adansonia gregorii, a baobab species endemic to the Kimberley region and the Northern Territory of Australia.