The most common and most likely answer to this crossword clue is the 5 letter word TUBER
I've seen this crossword clue in Financial Times
T
U
B
E
R
More clues leading to the result TUBER
- King Edward possibly taking bath with Queen
- Root: one travelling underground?
- Dahlia root, perhaps, in large container here in the middle
- Root plant, underground, by river
- Maybe a potato bin, I’m not sure
- Maybe King Edward, however, rejected Brenda
- Underground, is it? Or time to take a taxi?
- Underground centre for storage? Some plants have one
- Route reportedly/ found by traveller down in London?
- Swelling on bottom coming up
Buddy explains!
The straight part
We know that "Some plants have one" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case some plants have one = tuber.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 TUBER mean?
TUBER noun- A fleshy, thickened underground stem of a plant, usually containing stored starch, for example a potato or arrowroot.
- A thickened rootstock.
- A rounded, protuberant structure in a human or animal body.