The most common and most likely answer to this crossword clue is the 7 letter word TURNIPS
I've seen this crossword clue in The Daily Telegraph
T
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N
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More clues leading to the result TURNIPS
Buddy explains!

The straight part
We know that "Vegetables" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vegetables = turnips.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 TURNIPS mean?
TURNIPS noun- The white root of a yellow-flowered plant, Brassica rapa, grown as a vegetable and as fodder for cattle.
- The yellow root of a related plant, the swede or Brassica napus.
- A large, heavy pocket watch, so called because its profile resembled the vegetable.
- To plant with turnips.
- To feed or graze (livestock) on turnips.