What is the meaning of Bulrush in bengali?

Meaning(s):

1. tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down
2. its long flat leaves are used for making mats and chair seats
3. of North America, Europe, Asia and North Africa
4. tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America
5. पटेर (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 and North Africa)