/ ˈhɜːbl; NAmE ˈɜːrbl; ˈhɜːrbl/ adjective , noun
■ adjective
connected with or made from herbs :
herbal medicine / remedies
■ noun
a book about herbs , especially those used in medicines
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WORD ORIGIN
early 16th cent. (as a noun): from medieval Latin herbalis (adjective), from Latin herba grass, herb.