The art or operation of using a leveling instrument for finding a horizontal line, for ascertaining the differences of level between different points of the earth's surface included in a survey, for establishing grades, etc., as in finding the descent of a river, or locating a line of railroad.
We're dabbling in eugenics all the time, breeding ideal crops to replace less aesthetic or nutritious or hardy varieties; leveling forests to graze cattle or erect shopping malls and condos; planting groves of a few familiar trees that homeowners and industries prefer. Diane Ackerman
During the Great Depression, African Americans were faced with problems that were not unlike those experienced by the most disadvantaged groups in society. The Great Depression had a leveling effect, and all groups really experienced hard times: poor whites, poor blacks. William Julius Wilson