KanjiJLPT N2
Level

level, average

Mnemonic

Dig into the earth and discover a hidden cavern. Its entire floor is coated in ancient ice, frozen so uniformly smooth it forms the most perfectly level surface you've ever seen—a flawless natural mirror stretching wall to wall beneath the ground.
Additional thoughts
Picture sliding across the cavern's icy floor: it's so level you glide forever without tilting. The ice equalizes every bump in the earth, averaging out all imperfections.
Quick recall
An earth cavern floored with smooth ice creates a perfectly level surface.

Details

The keyword for 均 is level. This kanji conveys the idea of making things even, uniform, or equal across a surface or among a group. It suggests the act of smoothing out differences so that everything is balanced and on the same plane. The concept extends to averages and equality, where disparities are eliminated to achieve a state of uniformity.
On'yomi
きん
Kun'yomi
なら.す