名詞 herb:

1. a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
   同義詞：herbaceous plant
2. aromatic potherb used in cookery for its savory qualities

1. He alighted on a rare medical herb.
   他偶然找到了一種稀有的草藥。
2. The essence drawn out from this medicinal herb is good for high blood pressure.
   從這種藥草提煉出來的精華對(duì)治療高血壓有效。
3. I had to take the herb tea although it's bitter.
   雖然湯藥很苦，我還是不得不喝了。

herb

n.（名詞）
A plant whose stem does not produce woody, persistent tissue and generally dies back at the end of each growing season.
草：一種莖部由非木質(zhì)的、非宿存的組織組成的，一般在每段生長(zhǎng)期末死亡的植物
Any of various often aromatic plants used especially in medicine or as seasoning.
芳草：各種芳香的植物，尤指可作藥用或調(diào)味的芳草
Slang Marijuana.
【俚語】 大麻

來源：
Middle English herbe
中古英語 herbe
from Old French erbe
源自 古法語 erbe
from Latin herba
源自 拉丁語 herba

【引伸】
herb.y
adj.（形容詞）