Hangul syllable 뛃

It records a Korean syllable, not a full word meaning.

뛃 is a Hangul syllable block built from three jamo (Korean letters): ᄄ in the initial consonant position, ᅯ as the vowel, and ᆲ as the final consonant cluster. In Korean writing, the syllable contributes sound within a larger word or phrase; the surrounding syllables establish the word's meaning.

How did Hangul's name change?

The writing system went by different names in different periods.

An early record of Hunminjeongeum, the new Korean writing system, appears in Sejong Sillok, a royal chronicle, in 1443; the explanatory book followed in 1446. Its preface says the script was created because Korean speech differed from Chinese, then explains how consonants and vowels combine into syllables.

Earlier records call the script jeongeum, eonmun, or banjeol; after the Gabo Reform of 1894, gukmun or gukseo became common names for Korean writing. Hangeul appears as a name in the early 1910s and was widely used by 1928. These are names for the writing system, not new readings of 뛃.