The most common and most likely answer to this crossword clue is the 7 letter word ACONITE
I've seen this crossword clue in The Times
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More clues leading to the result ACONITE
- Poisonous plant, one featuring in a short story
- In choppy ocean, it's a potential killer
- Poisonous plant — it is buried in a geometric shape
- Criminal, one inside swallowed poison
- A notice about poison
- Plant: it is hidden by part of a pine?
- Deadly poison I included in a short story
- At once I disposed of poison
- Poison discovered in bacon items
- Poison yielding awful reaction. It’s not right
Buddy explains!
The straight part
We know that "Poisonous plant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case poisonous plant = aconite.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 ACONITE mean?
ACONITE noun- The herb wolfsbane, or monkshood; any plant of the genus Aconitum, all the species of which are poisonous.
- An extract or tincture obtained from Aconitum napellus, used as a poison and medicinally.