The Collaborative International Dictionary of English v.0.48:

Peele \Pee"le\ (p[=e]"l[-e]), n. (Zool.)
   A graceful and swift South African antelope (Pelea
   capreola). The hair is woolly, and ash-gray on the back and
   sides. The horns are black, long, slender, straight, nearly
   smooth, and very sharp. Called also rheeboc, rhebuck,
   rhebok, and rehboc.
   [1913 Webster]