Real Dictionary

level
a horizontal datum line or plane [...]
If one thing is level with another thing, it is at the same height as it.
If you draw level with someone or something, you get closer to them until you are by their side.
If you draw level with someone, you manage to improve your performance until it is the same as theirs, by scoring the same number of points or goals as them.
In cookery, a level spoonful of a substance such as flour or sugar is an amount that fills the spoon exactly, without going above the top edge.
adjective: When something is level, it is completely flat with no part higher than any other.
countable noun: A level is a point on a scale, for example a scale of amount, quality, or difficulty.
graded adjective: If you keep your voice level, you speak in a deliberately calm and unemotional way.
singular noun: If something is at a particular level, it is at that height.
singular noun: The level of a river, lake, or ocean or the level of liquid in a container is the height of its surface.
verb: If an accusation or criticism is levelled at someone, they are accused of doing wrong or they are criticized for something they have done.
verb: If someone or something such as a violent storm levels a building or area of land, they destroy it completely or make it completely flat.
verb: If you level an object at someone or something, you lift it and point it in their direction.
verb: If you level with someone, you tell them the truth and do not keep anything secret.
verb: In sport, if a player or team levels the score, they score a goal or win some points so that their team has the same number of points or goals as the opposing team.

level in American English
an instrument for determining, or adjusting a surface to, an even horizontal plane: it has a glass tube partly filled with liquid so as to leave an air bubble that moves to the exact center of the tube when the instrument is on an even horizontal plane; o
adjective: having no part higher than another; having a flat or even surface

level in British English
adjective: on a horizontal plane
noun: a horizontal datum line or plane
verb: to make (a surface) horizontal, level, or even