1 - A tool for finding whether a surface is level, or for creating a horizontal or vertical line of reference.
2 - A distance relative to a given reference elevation.
3 - Degree or amount.
1 - To adjust so as to make as flat or perpendicular to the ground as possible.
2 - To destroy by reducing to ground level; to raze.
3 - To progress to the next level.
1 - The same height at all places; parallel to a flat ground.
2 - At the same height as some reference; constructed as level with.
3 - Unvaried in frequency.





