The most common and most likely answer to this crossword clue is the 7 letter word TENDRIL
I've seen this crossword clue in The Daily Telegraph
T
E
N
D
R
I
L
More clues leading to the result TENDRIL
- Breaking into cash drawer briefly, aim right and shoot
- Pretend Rilke’s got this curly hair?
- Part of plant where number exercise endlessly
- A number do military exercises, we’re told, or shoot
- Figure leading exercise mostly in part of plant
- Climber to catch up on most of exercises
- The Strand building I’d rent by the pound
- Shoot several mostly training
- Shoot nurse with endless stream
- Number given brief training, it’s helpful to climber
Buddy explains!

The straight part
We know that "part of plant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of plant = tendril.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 TENDRIL mean?
TENDRIL noun- A thin, spirally coiling stem that attaches a plant to its support.
- A hair-like tentacle.
- Having the shape or properties of a tendril; thin and coiling; entwining.