What is the meaning of Hemlock?

Any of the poisonous umbelliferous plants, of the genera

  1. Conium, either Conium maculatum or Conium chaerophylloides.
  2. Cicuta, water hemlock plant.

Conium, either Conium maculatum or Conium chaerophylloides.

Cicuta, water hemlock plant.

The poison obtained from these Conium and Cicuta plants.

Any of several coniferous trees, of the genus Tsuga, that grow in North America; the wood of such trees.

Source: wiktionary.org