miraa
/mɪˈrɑː/(also mira, mira'a, mirah) Chiefly East African
noun
The leaves and twigs of the shrub khat, Catha edulis, which contain a stimulant drug.
Origin
1940s. Origin uncertain; perhaps from Meru miraa. Compare Kikuyu muirungi the shrub khat, riirungi (plural mairungi) the leaf of khat used as a stimulant.