buck
noun
a gymnastic horse without pommels and with one end elongated; used lengthwise for vaulting
a piece of paper money worth one dollar
United States author whose novels drew on her experiences as a missionary in China (1892-1973)
a framework for holding wood that is being sawed
mature male of various mammals (especially deer or antelope)
verb
to strive with determination
“John is bucking for a promotion”
resist
“buck the trend”
Synonymsgo againstmove quickly and violently
“The car tore down the street”
“He came charging into my office”
jump vertically, with legs stiff and back arched
“the yung filly bucked”
Source: WordNet 3.1, Princeton University