An example of herb is what you might put into a joint, or a marijuana cigarette.
An example of an herb is basil.
An example of an herb is mint, used to soothe an upset stomach.
Origin of herb
- Middle English herbe from Old French erbe from Latin herba
From American Heritage Dictionary of the English Language, 5th Edition
- Middle English erbe, from Old French erbe (French herbe), from Latin herba. Initial h restored 15c. after Latin but remained mute until 19c. (still is for many).