Look up: horsetail

1. Horsetail
   Horsetail is a primitive, spore-bearing plant (a sphenopsid) with rhizomes that was common during the Mesozoic Era . Its side branches are arranges in rings along the hollow stem. Horsetails date from the Devonian period 408-360 million years ago, but are still around today and are invasive weeds. Classification: Pteridophyte, Sphenopsid.
   Found on http://www.enchantedlearning.com/subject
   
   
2. horsetail
   [n] - perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. Horsetail
   a plant which first appeared in the Devonian. Horsetails have jointed stems with a ring of long, pointed leaves and branches at each joint. Equisetum is the only type of horsetail alive today. Fossil horsetails grew up to 30 m in height, for example Calamites, which had a very thin stem but grew extremely long and probably crept like bind weed
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4. Horsetail
   Horse'tail` noun 1. (Botany) A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum , and is allied to the ferns. See Illust. of Equisetum . 2. A Turkish standard, denoting rank. �...
   Found on http://www.encyclo.co.uk/webster/H/63
   
   
5. horsetail
   1. <botany> A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. ... 2. A Turkish standard, denoting rank. ... Commanders are distinguished by the number of horsetails carried before them. Thus, the sultan has seven, the grand vizier five,...
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6. Horsetail
   • (n.) A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. See Illust. of Equisetum. • (n.) A Turkish standard, denoting rank.
   Found on http://thinkexist.com/dictionary/meaning
   
   
7. horsetail
   (Equisetum species), plants of the genus Equisetum, 30 species of rushlike, conspicuously jointed, perennial herbs. Equisetum is the only living ... [7 related articles]
   Found on http://www.britannica.com/eb/a-z/h/71
   
   
8. horsetail
   horsetail, any plant of the genus Equisetum [Lat.,=horse bristle], the single surviving genus of a large group (Equisetophyta) of primitive vascular plants. Like the ferns and club mosses, relatives of the living horsetails thrived in the Carboniferous period (when they contributed to coal deposits)...
   Found on http://www.infoplease.com/ce6/sci/A08242
   
   
9. horsetail
   Plant related to ferns and club mosses; some species are also called scouring rush. There are about 35 living species, bearing their spores on cones at the stem tip. The upright stems are ribbed and often have spaced whorls of branches. Today they are of modest size, but hundreds of millions of years ago giant treelike forms existed. (Genus <...
   Found on http://www.talktalk.co.uk/reference/ency