witch grass
noun
mass noun
1- a tough creeping grass that can become an invasive weed黍属禾草：
1.1
- couch grass茅草, 偃麦草。
1.2
- （亦作old witch grass）a North American grass (Panicum capillare, family Gramineae)北美黍属禾草, 毛线稷（拉丁名Panicum capillare,禾本科）。