The word Hemlock can refer to a number of things:

• Several poisonous plants in the Parsley family, Apiaceae (formerly Umbelliferae) are called hemlock:

• Poison hemlock is a common European plant, Conium maculatum; it contains the alkaloid Coniine.

• Poison hemlock was the state poison of ancient Greece.
• Water dropwort is Oenanthe crocota.

Poison Hemlock can be easily identified by the purple spots on the stem. Quite different from these are the coniferous trees in the genus Tsuga, family Pinaceae. These are not toxic, being called 'hemlock' through a supposed similarity in the scent of the foliage to that of Conium maculatum.

• Hemlock is occasionally used as a place name (generally in the US because of the tree). see:

• Hemlock, Michigan

• Hemlock, Ohio
  • Hemlock can also refer to the Emacs text editor variant, Hemlock.
• Hemlock was also the famous plant which Socrates drank in order to end his life.
• Also Hemlock was the name of Dan Lilker's black metal project.

Ciguë | Cykuta | 毒堇