marijuana

1. A strong-smelling Asian plant (Cannabis sativa), also called hemp, from which a number of euphorogenic and halucinogenic drugs are prepared. The euphoric effect is predominently due to tetrahydrocannabinol (THC).
2. The dried leaves or the female flowers of the hemp plant, which is smoked or chewed to obtain a euphoric effect. The flowers usually have a higher concentration of the active ingredient, tetrahydrocannabinol.