A check; a relapse; a discouragement; a setback.
Whatever is thrown back in its course, such as water.
To plow again in the fall; said of prairie land broken up in the spring.
An unforeseen event causing great loss, upset or unpleasantness of whatever kind.
An unexpected natural or man-made catastrophe of substantial extent causing significant physical damage or destruction, loss of life or sometimes permanent change to the natural environment.