What 랚 means
It is one Korean syllable; its surrounding text supplies the word.
The block is built from ㄹ at the start, ㅐ as its vowel, and ㄲ at the end. These are jamo—letters of Hangul—and together they form one syllable. That structure shows its parts; the sentence tells you which word is intended.
Hangul was created under King Sejong in 1443, and a guide explaining how its letters work was published in 1446. Before Hangul, people used Chinese characters and systems adapted from them to write Korean; the new alphabet represented Korean speech more directly.
Neutral inside Korean text; alone, it gives little context.
A lone 랚 does not identify the word; read it with the surrounding Korean.
Questions people ask
1Why does 랚 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 랚
랚\B79ACodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.