nailrod


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Noun1.nailrod - tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of downnailrod - 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
cattail - tall erect herbs with sword-shaped leaves; cosmopolitan in fresh and salt marshes