- a poisonous European plant (Conium maculatum) of the umbel family, with compound umbels of small, white flowers and finely divided leaves; poison hemlock
- a poison made from this plant
- water hemlock
- any of a genus (Tsuga) of North American and Asian evergreen trees of the pine family, with drooping branches and short needles: the bark is used in tanning
- the wood of such a tree
Origin of hemlockMiddle English hemlok from Old English hemlic, hymlic, akin uncertain or unknown; perhaps to hymele, hop
- a. Any of various coniferous evergreen trees of the genus Tsuga of North America and eastern Asia, having small cones and short flat leaves with two white bands underneath.b. The wood of such trees, used as a source of lumber, wood pulp, and tannic acid.
- a. Any of several poisonous plants of the genera Conium and Cicuta of the parsley family, such as the poison hemlock.b. A poison obtained from the poison hemlock.
Origin of hemlockMiddle English hemlok poisonous hemlock from Old English hymlice, hemlic
From Middle English hemlok, hemeluc, from Old English hymlīc, hymlīce (“hemlock, bryony, convulvus”), literally 'hops-like', from hymele (“hop-vine”), from Proto-Germanic *humalaz, *humalōn, of unknown origin. Perhaps from Scythian *haumala, a diminutive of *hauma (“ephedra; juice”), from Proto-Indo-Iranian *sauma from Proto-Indo-European *seue- (“to suck; juice”).
More at suck.