More on level from Fact Monster:

• Levelers - Levelers Levelers or Levellers,English Puritan sect active at the time of the English civil war. ...
• spirit level - spirit level spirit level, tool for determining whether a surface is horizontal. It consists ...
• surveying - surveying surveying, method of determining accurately points and lines of direction (bearings) on ...
• sea level - sea level sea level, the level of the sea, which serves as the datum used for measurement of land ...
• leveling - leveling: leveling: see surveying.

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