Source : WordNet®

witchgrass
     n 1: North American grass with slender brushy panicles; often a
          weed on cultivated land [syn: {witch grass}, {old
          witchgrass}, {old witch grass}, {tumble grass}, {Panicum
          capillare}]
     2: European grass spreading rapidly by creeping rhizomes;
        naturalized in North America as a weed [syn: {dog grass},
        {couch grass}, {quackgrass}, {quack grass}, {quick grass},
         {witch grass}, {Agropyron repens}]