vervain Meaning, Definition & Usage

  1. noun any of numerous tropical or subtropical American plants of the genus Verbena grown for their showy spikes of variously colored flowers
    verbena.

WordNet

Ver"vain noun
Etymology
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.
Definitions
  1. (Bot.) Any plant of the genus Verbena.

Webster 1913