What 릮 means
It is one Hangul syllable block made from three Korean letters.
The order is consonant ㄹ, vowel ㅣ, consonant ㄲ. A syllable block can be part of a longer word; surrounding Korean text tells you how it fits.
Hangul was devised in 15th-century Korea to write Korean speech in learnable syllable blocks. Its earliest documented record dates to 1443; a 1446 explanatory text, 훈민정음 (“Correct Sounds for the Instruction of the People”), describes it. The name 한글 entered use in the early 1910s and was widespread by 1928. The surviving account distinguishes Korean speech from Chinese writing.
Questions people ask
1Why does 릮 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 릮
릮\B9AECodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.