The term 'Big African Antelope' can be summarized by two crossword solutions: ORYX (4 letters) and ELAND (5 letters). ORYX is a genus of large antelopes native to Africa and the Arabian Peninsula. They are characterized by long, straight horns and a light brown coat with white markings. ELAND is the largest species of antelope native to Africa, and is also known for its long, curved horns. Both species are herbivores and live in herds.