level

1. A tool for finding whether a surface is level, or for creating a horizontal or vertical line of reference. (countable, uncountable) · Hand me the level so I can tell if this is correctly installed.
2. A distance relative to a given reference elevation. (countable, uncountable) · By the end of the day, we'd dug down to the level of the old basement floor.
3. Degree or amount. (countable, uncountable) · The sound level is much too high; this hurts my ears.· We've reached a new level of success.
4. Achievement or qualification. (countable, uncountable) · She achieved a high level of distinction.
5. Distance from the root node of a tree structure. (countable, uncountable)
6. One of several discrete segments of a game, generally increasing in difficulty and representing different locations in the game world. (countable, uncountable) · It took me weeks to get to level seven. Watch out for the next level; the bad guys there are really overpowered.
7. A numeric value given to a character (or other element of a game) that represents its relative power, challenge or eligibility to do things, used as a game mechanic to govern progression through a game. (countable, uncountable) · My half-orc barbarian reached fifth level before he was squashed by a troll.
8. A floor of a multi-storey building. (countable, uncountable) · Take the elevator and get off at the promenade level.

Plural levels