sawbuck

noun

1. a sawhorse.

noun Slang.

1. a ten-dollar bill.

noun

1. US and Canadian a sawhorse, esp one having an X-shaped supporting structure
2. mainly US and Canadian slang a ten-dollar bill

n.“ten-dollar bill,” American English slang, 1850, from resemblance of X (Roman numeral 10) to the ends of a sawhorse. Sawbuck in the sense of “sawhorse” is attested only from 1862 but presumably is older (see saw (n.1)).