The Collaborative International Dictionary
bastard gemsbok
Roan \Roan\ (r[=o]n), a. [F. rouan; cf. Sp. roano, ruano, It. rovano, roano.]
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Having a bay, chestnut, brown, or black color, with gray or white thickly interspersed; -- said of a horse.
Give my roan a drench.
--Shak. -
Made of the leather called roan; as, roan binding.
Roan antelope (Zo["o]l.), a very large South African antelope ( Hippotragus equinus). It has long sharp horns and a stiff bright brown mane. Called also mahnya, equine antelope, and bastard gemsbok.
Wiktionary
bastard gemsbok
n. roan antelope