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English definition of “buck”

buck

noun [C]     /bʌk/
US Aus informal MONEY a dollar: You'll save a few extra bucks if you order it online. Can I borrow twenty bucks?
big bucks informal a large amount of money: Tourism means big bucks for the city.
make a quick/fast buck often disapproving to earn money quickly and easily, especially by doing something illegal or dishonest: They're more interested in making a quick buck than helping homeowners find the right loan.
pass the buck to blame someone or make them responsible for a problem that you do not want to deal with: Politicians were criticized for passing the buck on health care reform.
the buck stops here used to say that you will make important decisions and deal with a problem, and not allow other people to be blamed for it: When it comes to company policy, the buck stops here.
(Definition of buck noun from the Cambridge Business English Dictionary © Cambridge University Press)
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