Cannabis

(noun) any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs. Synonyms: cannabis, hemp.

(noun) the most commonly used illicit drug; considered a soft drug, it consists of the dried leaves of the hemp plant; smoked or chewed for euphoric effect. Synonyms: cannabis, marijuana, marihuana, ganja.