1. adjective /ˈlɛv.əl/
This table isnt quite level; see how this marble rolls off it?
b) At the same height as some reference; constructed as level with.
We tried to hang the pictures so that the bottom of the frames were level with the dark line in the wallpaper.
See Also: square
2. noun /ˈlɛv.əl/
a) A tool for finding whether a surface is level, or for creating a horizontal or vertical line of reference. <! A tool used to test if a plane is perpendicular to the ground.
Hand me the level so I can tell if this is correctly installed.
b) A distance relative to a given reference elevation.
By the end of the day, wed dug down to the level of the old basement floor.
3. verb /ˈlɛv.əl/
a) To adjust so as to make as flat or perpendicular to the ground of possible.
You can level the table by turning the pads that screw into the feet.
The hurricane leveled the forest.
Wikipedia foundation.