Entry 1 sense Webster, 1913 Spearmint · Spear·mint · IPA /ˈspɪɹˌmɪnt/ 01 n. A species of mint (Mentha viridis) growing in moist soil. It vields an aromatic oil. See Mint, and Mentha. 1. A species of mint (Mentha viridis) growing in moist soil. It vields an aromatic oil. See Mint, and Mentha.(Bot.) See: Mint, Mentha