Definition of "cannabis"

A tall annual dioecious plant (Cannabis, especially Cannabis sativa), native to central Asia and having alternate, palmately divided leaves and tough bast fibers.  examples

A mildly euphoriant or sedating, intoxicating hallucinogenic drug prepared from various parts of this plant.  examples

The purified and decarboxylated resin of the cannabis plant used for medicinal purposes rather than for any intoxicating effects.  examples