'witchgrass' definitions:

North American grass with slender brushy panicles; often a weed on cultivated land [syn: witchgrass, witch grass, old witchgrass, old witch grass, tumble grass, Panicum capillare]

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, witchgrass, Agropyron repens]