Source : Webster's Revised Unabridged Dictionary (1913)

Satrap \Sa"trap\ (? or ?; 277), n. [L. satrapes, Gr. ?, fr.
   OPers. khshatrap[=a]van ruler: cf. F. satrape.]
   The governor of a province in ancient Persia; hence, a petty
   autocrat despot.

Source : WordNet®

satrap
     n : a governor of a province in ancient Persia