Backset

Part of speech: noun (n.)

1. A check; a relapse; a discouragement; a setback.

2. Whatever is thrown back in its course, as water. Slackwater, or the backset caused by the overflow. Harper's Mag.

Part of speech: verb (v.)

To plow again, in the fall; -- said of prairie land broken up in the spring. [Western U.S.]