|1.||Also called: water hemlock any of several N temperate poisonous umbelliferous marsh plants of the genus Cicuta, esp C. virosa, having clusters of small white flowers|
|2.||a similar and related plant, Oxypolis rigidior of the southeastern and central US|
|3.||any umbelliferous plant reputed to be poisonous to cattle|
|a chattering or flighty, light-headed person.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
any of several poisonous plants, including seven species of Oxypolis, in the parsley family (Apiaceae), that are especially poisonous to cattle. The plants grow in marshes and are widely distributed in North America. They have clusters of white flowers surrounded by bracts (modified leaves). The most common species is O. rigidior, which is also called water-dropwort. Several species of Cicuta are also called cowbane (see water hemlock).
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