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any of various toxic gases, especially those used in chemical warfare to kill or incapacitate on inhalation or contact, as phosgene, chlorine, etc.
a gaseous substance, such as chlorine, phosgene, or lewisite, used in warfare to kill or harm

poison gas n.
A gas or vapor used especially in chemical warfare to injure, disable, or kill upon inhalation or contact.


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    noun 1. (defs 1, 3). noun 1. the US name for hemlock (sense 1)

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    noun 1. a shrub, Viburnum molle, of the central U.S., having white flowers and bluish-black fruit.

  • Poisoning

    [poi-zuh-ning] /ˈpɔɪ zə nɪŋ/ noun, Pathology. 1. the condition produced by a or by a toxic substance. [poi-zuh n] /ˈpɔɪ zən/ noun 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well-being: the poison of slander. 3. Slang. any variety […]

  • Poison-ivy

    noun 1. a vine or shrub, Rhus radicans, having trifoliate leaves and whitish berries and causing severe dermatitis when touched by persons sensitive to it. 2. . 3. the rash caused by touching poison ivy. noun 1. any of several North American anacardiaceous shrubs or vines of the genus Rhus (or Toxicodendron), esp R. radicans, […]

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