[buhk] 
| 1. | (of a saddle or pack animal) to leap with arched back and come down with head low and forelegs stiff, in order to dislodge a rider or pack. |
| 2. | Informal. to resist or oppose obstinately; object strongly: The mayor bucked at the school board's suggestion. |
| 3. | (of a vehicle, motor, or the like) to operate unevenly; move by jerks and bounces. |
| 4. | to throw or attempt to throw (a rider or pack) by bucking. |
| 5. | to force a way through or proceed against (an obstacle): The plane bucked a strong headwind. |
| 6. | to strike with the head; butt. |
| 7. | to resist or oppose obstinately; object strongly to. |
| 8. | Football. (of a ball-carrier) to charge into (the opponent's line). |
| 9. | to gamble, play, or take a risk against: He was bucking the odds when he bought that failing business. |
| 10. | to press a reinforcing device against (the force of a rivet) in order to absorb vibration and increase expansion. |
| 11. | an act of bucking. |
| 12. | buck for, to strive for a promotion or some other advantage: to buck for a raise. |
| 13. | buck up, to make or become more cheerful, vigorous, etc.: She knew that with a change of scene she would soon buck up. |
buck for
Strive for, aim for, as in She's bucking for Editor of the Year. Strongly associated with seeking a promotion in the military, this expression originated in the late 1800s and is now applied more widely.
