witchgrass

noun

1. North American grass with slender brushy panicles; often a weed on cultivated land

   noun.plant

   Synonyms old witch grass old witchgrass panicum capillare tumble grass witch grass

   Source: WordNet 3.0

2. European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed

   noun.plant

   Synonyms agropyron repens couch grass dog grass quack grass quackgrass quick grass witch grass

   Source: WordNet 3.0