
1) Grass of Granada 2) Slang for cannabis 3) Tea paraguayan
Found on
https://www.crosswordclues.com/clue/yerba

• (n.) An herb; a plant.
Found on
http://thinkexist.com/dictionary/meaning/yerba/

(from the article `maté`) In brewing maté, the dried leaves (yerba), placed in dried hollow gourds, are covered with boiling water and steeped. The gourds, called matés or ...
Found on
http://www.britannica.com/eb/a-z/y/8

<botany> An herb; a plant. ... 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, viridis, etc), but in California universally applied to a common, sweet-scented labiate plant (Micromeria Douglasii). Yerba dol osa. [Sp, herb of the ...
Found on
http://www.encyclo.co.uk/local/20973
Yer'ba noun [ Spanish ]
(Botany) An herb; a plant. » This word is much used in compound names of plants in Spanish; as,
yerba buena [ Spanish , a good herb], a name applied in Spain to several kinds of mint (
Mentha sativa ,
viridis , etc.), but in California uni...
Found on
http://www.encyclo.co.uk/webster/Y/4

Yerba is slang for cannabis.
Found on
http://www.probertencyclopaedia.com/browse/ZY.HTM
No exact match found.