hemlock

American  

[hem-lok] / ˈhɛmˌlɒk /

noun

1. a poisonous plant, Conium maculatum, of the parsley family, having purple-spotted stems, finely divided leaves, and umbels of small white flowers, used medicinally as a powerful sedative.

2. a poisonous drink made from this plant.

3. any of various other plants, especially of the genus Cicuta, as the water hemlock.

4. Also called hemlock spruce.  any of several coniferous trees of the genus Tsuga, native to the U.S., characterized by a pyramidal manner of growth.

5. the soft, light wood of a hemlock tree, used in making paper, in the construction of buildings, etc.

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hemlock British  

/ ˈhɛmˌlɒk /

noun

1. US name: poison hemlock.  an umbelliferous poisonous Eurasian plant, Conium maculatum, having finely divided leaves, spotted stems, and small white flowers See also water hemlock

2. a poisonous drug derived from this plant

3. Also called: hemlock spruce.  any coniferous tree of the genus Tsuga, of North America and E Asia, having short flat needles: family Pinaceae See also western hemlock

4. the wood of any of these trees, used for lumber and as a source of wood pulp

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Etymology

Origin of hemlock

before 900; Middle English hemlok, humlok, Old English hymlic, hemlic; perhaps akin to Old English hymele hop plant

Example Sentences

“I wanted our house to feel really warm and bring nature inside,” says Lindsay, referring to the Western hemlock tongue and groove planks that she and Daniel installed on the walls and ceilings.

From Los Angeles Times • Dec. 22, 2025

A Pacific Northwest forest planted with Douglas fir, cedar, hemlock and larch underplanted with evergreen huckleberry, salal and ferns transitions to an open woodland of native dogwood trees, red twig dogwood and flowering red currant.

From Seattle Times • May 25, 2024

While the pest prefers leafy hardwoods, like oaks, Salp said she’s seen them feed on conifers — the category that includes iconic Northwest species like the Douglas fir and western hemlock.

From Seattle Times • May 9, 2024

Case’s project involves testing whether breeds of native Douglas fir and western hemlock from drier parts of the Pacific Northwest can be used to help Western Washington forests adapt to climate change.

From Seattle Times • Dec. 30, 2023

I looked sadly at the magnificent hemlock and was about to put the fire out and desert it when I said something to myself.

From "My Side of the Mountain" by Jean Craighead George