<p><strong>Noun</strong></p><ul><li>A poisonous plant, <em>Conium maculatum</em>, of the parsley family, having purple-spotted stems, finely divided leaves, and umbels of small white flowers, used medicinally as a powerful sedative.</li><li>A poisonous drink made from this plant.</li><li>Any of various other plants, especially of the genus <em>Cicuta</em>, as the water hemlock.</li><li>Also called hemlock spruce: any of several coniferous trees of the genus <em>Tsuga</em>, native to the U.S., characterized by a pyramidal manner of growth.</li><li>The soft, light wood of a hemlock tree, used in making paper, in the construction of buildings, etc.</li></ul>