herb 
(ûrb, hûrb)
(ûrb, hûrb)n.
1. A plant whose stem does not produce woody, persistent tissue and generally dies back at the end of each growing season.
2. Any of various often aromatic plants used especially in medicine or as seasoning.
3. Slang Marijuana.
[Middle English herbe, from Old French erbe, from Latin herba.]
herby adj.