Bulrush
n.
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A kind of large rush, growing in wet land or in water.
The name bulrush is applied in England especially to the cat-tail (Typha latifolia and Typha angustifolia) and to the lake club-rush (Scirpus lacustris); in America, to the Juncus effusus, and also to species of Scirpus or club-rush.