From WordNet (r) 3.0 (2006) :
khat
n 1: the leaves of the shrub Catha edulis which are chewed like
tobacco or used to make tea; has the effect of a euphoric
stimulant; "in Yemen kat is used daily by 85% of adults"
[syn: kat, khat, qat, quat, cat, Arabian tea,
African tea]