Among the many slang expressions for denominations of money are deuce, originally a mild curse of the devil when the number two showed up in dice or cards, and the Yiddish fin for a five.
The term sawbuck for a ten-dollar bill comes from the frame of a sawbuck, or sawhorse, on which farmers held logs to be cut into firewood.
This frame rested on two X-shaped supports that resembled the two roman numerals for ten found on the early American ten-dollar bill.
