saw·buck 
(sôbŭk′)
(sôbŭk′)n.
1. A sawhorse, especially one having a crossed pair of legs at each end.
2. Slang A ten-dollar bill.
[Partial translation of Dutch zaagbok, sawbuck : zaag, saw + bok, goat. Sense 2, from the resemblance of the crossed pairs of legs to the Roman numeral X.]