Bul"rush` (&?;), n. [OE. bulrysche, bolroysche; of uncertain origin, perh. fr. bole stem + rush.] (Bot.) A kind of large rush, growing in wet land or in water.

&fist; The name bulrush is applied in England especially to the cat-tail (Typha latifolia and T. angustifolia) and to the lake club-rush (Scirpus lacustris); in America, to the Juncus effusus, and also to species of Scirpus or club-rush.