n. (Bot.) An American genus (Rhexia) of perennial herbs, with opposite leaves, and showy flowers (usually bright purple), with four petals and eight stamens, -- the only genus of the order Melastomaceæ inhabiting a temperate clime. [ 1913 Webster ]
n. (Bot.) A plant (Zostera marina), with very long and narrow leaves, growing abundantly in shallow bays along the North Atlantic coast. [ 1913 Webster ]