Hangul syllable Ggweols

It is one Korean syllable, not a word definition.

Hangul letters, called jamo, are grouped into a square block for each syllable. 꿠 has initial consonant ㄲ, vowel ㅝ, and final two-consonant cluster ㄽ, called batchim. “Ggweols” is Unicode’s construction label, not Korean vocabulary or a pronunciation guide; surrounding syllables supply its meaning in a word.

King Sejong created the script, first called Hunminjeongeum, in 1443; a book of that name explained its purpose and principles in 1446. Before Hangul, Korean was written with Chinese characters and adapted systems such as Idu, Gugyeol, and Hyangchal. Official documents remained chiefly Chinese-character-based until Hangul became the national writing system in 1894.

How do I type 꿠 on a Korean keyboard?

Use a Korean 2-set input layout.

With standard Dubeolsik (2-set) input active, enter Shift+R, N, J, F, T. These keys produce ㄲ, ㅜ, ㅓ, ㄹ, ㅅ; the input method combines ㅜ+ㅓ into ㅝ and ㄹ+ㅅ into ㄽ, then forms 꿠. The Latin key labels are key positions, not a romanized spelling.

Why can 꿠 appear as separate jamo?

Unicode permits a block or an equivalent jamo sequence.

Normalization may turn the precomposed block into 꿠, three conjoining Hangul letters that represent the same syllable. Text tools may expose those components instead of one block; the syllable itself has not changed.

ㄽ is a two-consonant batchim, a syllable-final cluster; ㄹ is l-like here and ㅅ is s-like. At a word’s end or before a consonant, ㄽ is pronounced ㄹ. Before a vowel-starting Korean particle or ending, ㄹ stays here and ㅅ moves to the next syllable, pronounced as tense ㅆ, an intensified s sound.