Kat

from WordNet (r) 3.0 (2006)

kat
    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}]

from The Collaborative International Dictionary of English v.0.48

Kat \Kat\ (k[aum]t), n. (Bot.)
   An Arabian shrub ({Catha edulis}) the leaves of which are
   used as tea by the Arabs.
   [1913 Webster]