Reviewed by: David WestfallCofounder
Wild grass, and also the herbs you cook with
Encoding Strategies:
linguistic
visual

herb
plant used for cooking
+
-a
noun suffix
Hierba means grass, like wild grass, and is related to the English word herb0, which is a green, grassy plant.
hierba

grass (wild)
Grass covering the ground, usually wild grass.
El caballo pasta en la hierba altaThe horse grazes in the tall grass
Los niños corrían descalzos por la hierbaThe kids were running barefoot on the grass

herb (cooking, medicine)
A leafy plant grown for cooking or for medicine.
Le puse hierbas frescas al guisoI added fresh herbs to the stew
Mi abuela cura casi todo con hierbas medicinalesMy grandmother treats almost everything with medicinal herbs

weed, pot (colloquial)
Marijuana, named for the dried plant it comes from. Even in English, a "weed" is just a wild grass.
Toda la habitación olía a hierbaThe whole room smelled of weed
Lo encontraron con un poco de hierba en el bolsilloThey found him with a little pot in his pocket