Wiktionary
vb. To cause to fall off.
Usage examples of "buck off".
Concordia kicked and thrashed about, trying to buck off the men who were pinning her to the ground.
The mountains were here long before some government bureaucrat figured out a way to make a buck off them.
How the hell the damned thing had made it through selection in the first place, and who the hell had made a buck off it, and which masochistic sons of bitches actually enjoyed pogoing around with their lunches in their throats were long standing topics of bull sessions.
As per instructions, the real freighter crew had her hot and ready to launch as soon as they loaded, and there was another freight shuttle more than happy to make a quick buck off someone else's impatience.
The sleaze-ball who always finds a way to make a buck off someone else's tragedy.