| quitch grass | <botany> A perennial grass (Agropyrum repens) having long running rootstalks, by which it spreads rapidly and pertinaciously, and so becomes a troublesome weed. Also called couch grass, quick grass, quick grass, twitch grass. Origin: Properly quick grass, being probably so called from its vigorous growth, or from its tenacity of life. See Quick, and cf. Couch grass. Source: Websters Dictionary (01 Mar 1998) |
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| oil of lemon grass | Volatile oil from Cymbopogon citratus and of C. Flexuosus (family Gramineae). Used in perfumery and as a source of citral for the synthesis of vitamin A. (05 Mar 2000) |
| timothy grass | <botany> A kind of grass (Phleum pratense) with long cylindrical spikes; called also herd's grass, in England, cat's-tail grass, and meadow cat's-tail grass. It is much prized for fodder. Origin: From Timothy Hanson, who carried the seed from New England to Maryland about 1720. Source: Websters Dictionary (01 Mar 1998) |
| twitch grass | <botany> See Quitch grass. Source: Websters Dictionary (01 Mar 1998) |
| johnson grass | <botany> A tall perennial grass (Sorghum Halepense), valuable in the Southern and Western States for pasture and hay. The rootstocks are large and juicy and are eagerly sought by swine. Synonym: Cuba grass, Means grass, Evergreen millet, and Arabian millet. Origin: Named after W. Johnson of Alabama, who planted it about 1840-1845. Source: Websters Dictionary (01 Mar 1998) |
| lyme grass | <botany> A coarse perennial grass of several species of Elymus, especially. E. Canadensis, and the European E. Arenarius. Source: Websters Dictionary (01 Mar 1998) |