Definitions

1. noun

a horizontal beam or timber, especially one used as a support for a roof or a beam used as a sawhorse.

“The carpenter used a sawbuck to support the heavy beam while he worked on the roof.”

2. noun

the twenty-five-cent coin, especially in the United States, especially prior to 1965.

“In the old days, a sawbuck was a significant amount of money, equivalent to half a dollar.”