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Definition of Catha edulis
1. Noun. A shrub that is cultivated by Arabs for its leaves which are chewed or used to make tea.
Medical Definition of Catha edulis
1. A plant of Ethiopia and Arabia (family Celastraceae), cultivated for use as a stimulant; khat (the fresh leaves and twigs) is chewed or used in the preparation of a beverage; the active principle is pharmacologically related to the amphetamines, probably d-norisoephedrine. Origin: Ar. Khat (05 Mar 2000)