Blue curls Meaning, Definition & Usage

  1. noun any of several plants of the genus Trichostema having whorls of small blue flowers

WordNet

Definitions
  1. . (Bot.) See under Blue.
Definitions
  1. (Bot.), a common plant (Trichostema dichotomum), resembling pennyroyal, and hence called also bastard pennyroyal.

Webster 1913