spearmint Meaning, Definition & Usage

  1. noun common garden herb having clusters of small purplish flowers and yielding an oil used as a flavoring
    Mentha spicata.

WordNet

Spear"mint` noun
Etymology
So named from its spiry, not capitate, inflorescence. Dr. Prior.
Definitions
  1. (Bot.) A species of mint (Mentha viridis) growing in moist soil. It vields an aromatic oil. See Mint, and Mentha.

Webster 1913