Buck

buck (http://definr.com/buck)

     adj 1: (of upper front teeth) projecting outward; "buck teeth"
            [syn: buck(a), bucked(a)]
     2: of the lowest rank in a category; "a buck private"
     n 1: a gymnastic horse without pommels and with one end
          elongated; used lengthwise for vaulting [syn: {vaulting
          horse}, long horse]
     2: (United States) a piece of paper money worth one dollar
        [syn: dollar, dollar bill, one dollar bill, clam]
     3: United States author whose novels drew on her experiences as
        a missionary in China (1892-1973) [syn: Buck, {Pearl
        Buck}, Pearl Sydenstricker Buck]
     4: a framework for holding wood that is being sawed [syn: sawhorse,
         horse, sawbuck]
     5: mature male of various mammals (especially deer or antelope)
     v 1: to strive with determination; "John is bucking for a
          promotion."
     2: resist; "buck the trend" [syn: go against]
     3: move quickly and violently; "The car tore down the street";
        "He came charging into my office" [syn: tear, shoot, {shoot
        down}, charge]
     4: jump vertically, with legs stiff and back arched, as of
        horses [syn: jerk, hitch]