A powerful and very poisonous vegetable alkaloid found in the hemlock (
Conium maculatum) and extracted as a colorless oil,
C8H17N, of strong repulsive odor and acrid taste. It is regarded as a derivative of piperidine and likewise of one of the collidines. It occasions a gradual paralysis of the motor nerves. Called also
coniine,
coneine,
conia, etc. See
Conium, 2. [
1913 Webster]