Meaning of “level” - Learner’s Dictionary

level

noun [ C ] uk us /ˈlevəl/
HEIGHT

B2 the height of something:

the water level
AMOUNT

B2 the amount or number of something:

The level of iron in her blood was too low.
Chess requires a high level of concentration.
ABILITY

A2 someone's ability compared to other people:

Students at this level need a lot of help.
FLOOR

a floor in a building:

The store had three levels.
→ See also A level , a level playing field , sea level

(Definition of “level noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)