noun

1. BUCK, mature male of various mammals (especially deer or antelope)
2. BUCK, a framework for holding wood that is being sawed
3. BUCK, a gymnastic horse without pommels and with one end elongated; used lengthwise for vaulting
4. BUCK, United States author whose novels drew on her experiences as a missionary in China (1892-1973)
5. BUCK, a piece of paper money worth one dollar
6. BUCK, to jump violently into the air with the back bent upward
7. BUCK, to oppose or resist (something or someone)

verb

1. BUCK, jump vertically, with legs stiff and back arched
2. BUCK, move quickly and violently
3. BUCK, resist
4. BUCK, to strive with determination

1. the car bucked and stalled
2. bucked the trend to outdo everyone else and just wore the same clothes they had in previous years