The most common and most likely answer to this crossword clue is the 7 letter word SILIQUE
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The straight part
We know that "dry fruit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dry fruit = silique.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 SILIQUE mean?
SILIQUE noun- A long dry fruit (seed capsule), length more than twice the width, typical to cruciferous plants and consisting of two fused carpels that separate when ripe.