bles·bok (blěs'bŏk') n.
pl.blesbok or bles·boks A South African antelope (Damaliscus albifrons) having curved horns and a large white mark on its face.
[Afrikaans : bles, white mark on an animal's face (from Middle Dutch; see bhel-1 in Indo-European roots) + bok, buck (from Middle Dutch boc).]