buck
noun
°A male deer, antelope, sheep, goat, rabbit, hare, and sometimes the male of other animals such as the ferret and shad.
°An uncastrated sheep, a ram.
verb
°(of a horse, or similar saddle or pack animal) To leap upward arching its back, coming down with head low and forelegs stiff, forcefully kicking its hind legs upward, often in an attempt to dislodge or throw a rider or pack.
°(of a horse, or similar saddle or pack animal) to successfully throw or attempt to throw (a rider or pack) by bucking.
synonyms: stag, billygoat, billy, buckling more» , buck-goat, he-goat, hob, hob-ferret, ram, tup, bill, bone, clam, cucumber, dead president, greenback, note, one-spot, paper, simoleon, single, smackeroo, button