the male of the deer, antelope, rabbit, hare, sheep, or goat.

the male of certain other animals, as the shad.

an impetuous, dashing, or spirited man or youth.

Often Disparaging . a male American Indian or black.

buckskin.

bucks, casual oxford shoes made of buckskin, often in white or a neutral color.

Military . of the lowest of several ranks involving the same principal designation, hence subject to promotion within the rank

buck private; buck sergeant.

noun

bull , stag

verb

bound , combat , contest , dislodge , dispute , duel , fight , jerk , jump , leap , oppose , prance , repel , start , throw , traverse , trip , unseat , vault , withstand , challenge , resist

phrasal verb

cheer , hearten , nerve , perk up