(n) a fungus that infects various cereal plants forming compact black masses of branching filaments that replace many grains of the plant; source of medicinally important alkaloids and of lysergic acid, Syn.Claviceps purpurea
(n) poisoning by ingestion of ergot-infected grain products; characterized by thirst and diarrhea and nausea and cramping and vomiting and abnormal cardiac rhythms; in severe cases it can cause seizures and gangrene of the limbs
n. [ F. ergot, argot, lit., a spur. ] 1. A diseased condition of rye and other cereals, in which the grains become black, and often spur-shaped. It is caused by a parasitic fungus, Claviceps purpurea. [ 1913 Webster ]
2. The mycelium or spawn of this fungus infecting grains of rye and wheat. It is a powerful remedial agent, and also a dangerous poison, and is used as a means of hastening childbirth, and to arrest bleeding. [ 1913 Webster ]
3. (Far.) A stub, like soft horn, about the size of a chestnut, situated behind and below the pastern joint. [ 1913 Webster ]
(Chem.) A powerful astringent alkaloid extracted from ergot as a brown, amorphous, bitter substance. It is used to produce contraction of the uterus. [ 1913 Webster ]
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