Sedative but Toxic Plant; It Killed Socrates
This page is the CodyCross answer for the clue below from Transport, Group 106, Puzzle 3.
Question is: Sedative but Toxic Plant; It Killed Socrates
and the answer is: HEMLOCK
Word Meaning:
HEMLOCK — Any of the poisonous umbelliferous plants, of the genera
Definitions from Wiktionary.