Any of several wetland plants, mostly in the family Cyperaceae (the sedges):
User Defined Definitions
"tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down; its long flat leaves are used for making mats and chair seats; of North America, Europe, Asia a"
"tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America"