The most common and most likely answer to this crossword clue is the 10 letter word HARVESTERS
I've seen this crossword clue in Financial Times
H
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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 HARVESTERS mean?
HARVESTERS noun- A person who gathers the harvest.
- A machine that gathers the harvest.
- A program or algorithm that gathers data from a source.
- A North American butterfly, Feniseca tarquinius, whose larvae eat aphids and are the only entirely carnivorous caterpillars in North America
- Any butterfly of the lycaenid subfamily Miletinae to which this belongs, which are all carnivores