Source : Webster's Revised Unabridged Dictionary (1913)

Quat \Quat\, n. [Etymol. uncertain.]
   (a) A pustule. [Obs.]
   (b) An annoying, worthless person. --Shak.

Quat \Quat\, v. t.
   To satiate; to satisfy. [Prov. Eng.]

Source : WordNet®

quat
     n : 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}, {cat}, {Arabian tea}, {African
         tea}]