hemp

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Cannabis.
• noun The tough, coarse fiber of the cannabis plant, used to make cordage, yarn, and fabric.
• noun Any of various plants similar to cannabis, especially one yielding a similar fiber.
• noun The fiber of such a plant.

from The Century Dictionary.

• noun The Indian hemp, Apocynum, chiefly A. cannabinum.
• noun Same as American jute (which see, under jute).
• noun The black Indian hemp, Apocynum cannabinum. See Apocynum.
• noun The white Indian hemp, either of two American species of Asclepias, A. incarnata, the swamp-milkweed, and A. pulchra, the hairy milkweed, which yield a white or light-gray fiber of some commercial value.
• noun the fiber of Maoutia Puya. See pooa.
• noun A plant of the genus Cannabis, natural order Urticaceæ, of which C. sativa is the only known species, C. Indica being only a variety.
• noun The fiber of this plant, obtained from the skin or rind by rotting the stalks under moisture, and prepared by various processes for manufacturing uses.
• noun One of various plants of other genera yielding similar fibers, distinguished by specific epithets
• noun Calotropis gigantea (Asclepiadaceæ): same as madar.
• noun Apocynum cannabinum. See Apocynum.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Bot.) A plant of the genus Cannabis (Cannabis sativa), the fibrous skin or bark of which is used for making cloth and cordage. The name is also applied to various other plants yielding fiber.
• noun The fiber of the skin or rind of the plant, prepared for spinning. The name has also been extended to various fibers resembling the true hemp.
• noun See under African, and Bowstring.
• noun the Asiatic herb Datisca cannabina.
• noun a species of dogbane (Apocynum cannabinum), the fiber of which was used by the Indians.
• noun a coarse, composite herb of Europe (Eupatorium cannabinum), much like the American boneset.
• noun a plant of the genus Galeopsis (Galeopsis Tetrahit), belonging to the Mint family.
• noun See under Indian, a.
• noun the fiber of Musa textilis.
• noun the fiber of Agave sisalana, of Mexico and Yucatan.
• noun a fiber obtained from a leguminous plant (Crotalaria juncea).
• noun an annual American weed (Acnida cannabina), related to the amaranth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A tall annual herb, Cannabis sativa, native to Asia.
• noun Various products of this plant, including fibres and the drug cannabis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a rope that is used by a hangman to execute persons who have been condemned to death by hanging
• noun any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs
• noun a plant fiber