'Mentha viridis' definitions:

Definition of 'Mentha viridis'

From: GCIDE

Mint \Mint\ (m[i^]nt), n. [AS. minte, fr. L. mentha, Gr. mi`nqa, mi`nqh.] (Bot.) The name of several aromatic labiate plants, mostly of the genus Mentha, yielding odoriferous essential oils by distillation. See Mentha. [1913 Webster]
Note:
Corn mint is Mentha arvensis.
Horsemint is Mentha sylvestris, and in the United States Monarda punctata, which differs from the true mints in several respects.
Mountain mint is any species of the related genus Pycnanthemum, common in North America.
Peppermint is Mentha piperita.
Spearmint is Mentha viridis.
Water mint is Mentha aquatica. [1913 Webster]
Mint camphor. (Chem.) See Menthol.
Mint julep. See Julep.
Mint sauce, a sauce flavored with spearmint, for meats. [1913 Webster]

From: GCIDE

Spearmint \Spear"mint`\, n. [So named from its spiry, not capitate, inflorescence. --Dr. Prior.] (Bot.) A species of mint (Mentha viridis) growing in moist soil. It vields an aromatic oil. See Mint, and Mentha. [1913 Webster]

From: GCIDE

Yerba \Yer"ba\, n. [Sp.] (Bot.) An herb; a plant. [1913 Webster]
Note: This word is much used in compound names of plants in Spanish; as, yerba buena [Sp., a good herb], a name applied in Spain to several kinds of mint ({Mentha sativa}, Mentha viridis, etc.), but in California universally applied to a common, sweet-scented labiate plant (Micromeria Douglasii). [1913 Webster]
Yerba dol osa. [Sp., herb of the she-bear.] A kind of buckthorn (Rhamnus Californica).
Yerba mansa. [Sp., a mild herb, soft herb.] A plant (Anemopsis Californica) with a pungent, aromatic rootstock, used medicinally by the Mexicans and the Indians.
Yerba reuma. [Cf. Sp. reuma rheum, rheumatism.] A low California undershrub (Frankenia grandifolia). [1913 Webster]