The most common and most likely answer to this crossword clue is the 7 letter word TAPROOT
I've seen this crossword clue in Financial Times
T
A
P
R
O
O
T
More clues leading to the result TAPROOT
- Biggest supporter in ground hit bouncer close to exit
- Radical solution for supplying plant
- Part of plant is sound, having taken month to bed in
- Kid about a professional source that goes deep
- Steamed potato stuffed with head of red turnip, perhaps?
- Carrot, for example, right in potato salad?
- Key support returned precisely after expert’s brought in.
Buddy explains!

The straight part
We know that "Carrot, for example" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case carrot, for example = taproot.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 TAPROOT mean?
TAPROOT noun- A long, tapering root possessed by many plants (such as carrots and dandelions).