The word buck is much used in composition for the names of antelopes; as, bush buck, spring buck.
Blue buck. See under Blue. -- Water buck, a South African variety of antelope (Kobus ellipsiprymnus). See Illust. of Antelope.
Buck (bk), v. i. 1. To copulate, as bucks and does.
2. To spring with quick plunging leaps, descending with the fore legs rigid and the head held as low down as possible; -- said of a vicious horse or mule.
Buck, v. t. 1. (Mil.) To subject to a mode of punishment which consists in tying the wrists together, passing the arms over the bent knees, and putting a stick across the arms and in the angle formed by the knees.