Source : Webster's Revised Unabridged Dictionary (1913)

Pallah \Pal"lah\, n. (Zo["o]l.)
   A large South African antelope ({[AE]pyceros melampus}). The
   male has long lyrate and annulated horns. The general color
   is bay, with a black crescent on the croup. Called also
   {roodebok}.

Source : WordNet®

Aepyceros melampus
     n : African antelope with ridged curved horns; moves with
         enormous leaps [syn: {impala}]