The most common and most likely answer to this crossword clue is the 10 letter word BRACHIOPOD
I've seen this crossword clue in The Guardian
B
R
A
C
H
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D
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 BRACHIOPOD mean?
BRACHIOPOD noun- Any of many marine invertebrates, of the phylum Brachiopoda, that have bivalve dorsal and ventral shells with two tentacle-bearing arms that capture food