\Ver"vain\, n. [OE. verveine, F. verveine, fr. L.
verbena, pl. verbenae sacred boughs of laurel, olive, or
myrtle, a class of plants; cf. verbenaca vervain. Cf.
{Verbena}.] (Bot.)
Any plant of the genus Verbena.
{Vervain mallow} (Bot.), a species of mallow ({Malva Alcea})
   with rose-colored flowers.