slang A 10-dollar bill. A sawbuck is another name for a sawhorse (a support on which timber is placed when it is being cut) that has two crossed legs at each end, creating an X, which were featured on old 10-dollar bills as the Roman numeral for 10. Primarily heard in US. I've never laid more than a sawbuck on any bet in my life, and while I've never had any huge winnings, I've never lost more than I'm comfortable parting with, either. This place is great. You can get a full meal, a soft drink, and a dessert for less than a sawbuck!

A nickname for the US $20 bill. I don't get paid till next week—any chance you can loan me a double saw?