A grysbok is a type of African antelope. The term can refer to either: ...
small speckled south African antelope
• (n.) A small South African antelope (Neotragus melanotis). It is speckled with gray and chestnut, above; the under parts are reddish fawn.
Grys'bok noun [ Dutch grijs gray + bok buck.] (Zoology) A small South African antelope ( Neotragus melanotis ). It is speckled with gray and chestnut, above; the under parts are reddish fawn. 
The grysbok (grisbok, grey buck, Antilope melanotis) is a species of antelope found in southern Africa. It reaches a height of one metre in length and 50 centimetres in height at the shoulder. It is reddish-grey in colour and is hunted for food.