What 뜬 means
뜬 has no fixed meaning outside its Korean word or phrase.
Hangul was created in the 15th century as a writing system for Korean; its letters are arranged into syllable-sized blocks. 뜬 is one such block, not a separately invented sign.
뜬 can be a form of 뜨다, a Korean verb with several senses. 뜬소문 means a baseless rumor, 뜬구름을 잡다 means to chase an unrealistic idea, and 뜬눈으로 밤을 새우다 means to stay awake all night. These readings belong to the full words and phrases.
How do I type 뜬?
On a Korean 2-set keyboard, press Shift+E, M, then S.
A Korean input method composes those keystrokes into 뜬. If the letters appear separately, enable Hangul composition in the input method.
Neutral as a Korean syllable; the surrounding word or phrase supplies the tone and meaning.
Find the Korean word or phrase around 뜬 before translating it.
Combination ideas
3Questions people ask
1Why does 뜬 look different in different fonts?
Hangul syllable blocks are drawn by the active font, so their strokes can vary in shape. The appearance changes while the text still represents the same Korean syllable.
How to type 뜬
뜬\B72CCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.