To plow again in the fall; said of prairie land broken up in the spring.
A check; a relapse; a discouragement; a setback.
Whatever is thrown back in its course, such as water.
To dig underneath (something), to make a passage for destructive or military purposes; to sap.
To weaken or work against; to hinder, sabotage.
To erode the base or foundation of something, e.g. by the action of water.