What 쳫 means
No fixed word meaning by itself. It is a Hangul syllable block: the Korean jamo, or letter forms, are ㅊ, ㅕ, and ㅎ. Unicode’s label “cyeoh” joins their short names; it is a label, not a Korean word.
When was Hangul created?
Under King Sejong in the 15th century. Hangul was devised to write Korean speech. Its original title, Hunminjeongeum (“proper sounds for instructing the people”), appears in a record from 1443; an explanatory book followed in 1446. Earlier Korean writing used Chinese characters and adaptations. Hangul’s basic consonant shapes drew on speech organs. The name Hangeul appears in records from the early 1910s. These dates concern the script’s history, not this individual syllable.
Questions people ask
1Why does 쳫 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 쳫
쳫\CCEBCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.