Enter a clue or pattern or both:
The Clue
Buttercup's kin (9 letter answer)
The Answer
MONKSHOOD
Tags
Notes
The answer MONKSHOOD is so rare that it appears less than once every 2500 puzzles.
Definition
MONKSHOOD as a noun:
1. (monkshood, helmetflower, helmet flower, Aconitum napellus) = a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite