buck
     adj : 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: 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: {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; "the yung
        filly bucked" [syn: {jerk}, {hitch}]
Source: WordNet® 2.0