Hangul Syllable Rum

It is the Korean syllable /rum/, not a standalone emoji meaning.

As a Korean word, 룸 is borrowed from English room and can mean a room, especially in hotel or restaurant contexts. In compounds, 룸메이트 means “roommate,” while 원룸 names a one-room home that combines sleeping, living, cooking, and dining functions.

If someone sends only 룸, treat it as Korean text or a fragment, not a reaction emoji; surrounding words decide whether it is the noun or part of a compound.

why is 룸 a square?

Hangul packs alphabetic jamo into one syllable block.

The system behind this block was developed in 1443 and published with its explanations in 1446. Its purpose was practical: Chinese characters and earlier borrowed-notation systems did not represent Korean neatly, so the project aimed to represent Korean sounds more directly and make writing easier for ordinary people to learn.

The documented relatives are the jamo inside the block and earlier Korean-writing systems such as idu, hyangchal, and gugyeol, which used Chinese characters. In South Korea the script is usually called Hangul, while Unicode notes Choseongul in North Korea and Jeongum as a politically neutral term. Those dates describe Hangul, not the loanword 룸. In the sources reviewed through 2026-09-07, I found no reliable first-attestation date for this exact English-derived word.

how do I type 룸?

Type the jamo sequence in a Korean IME.

Type ㄹ, ㅜ, then ㅁ in a Korean IME; it should compose the syllable as 룸. Unicode's equivalent conjoining sequence is 룸.

If you enter compatibility jamo separately, you may see ㄹㅜㅁ instead. Unicode gives those compatibility characters no conjoining semantics, so that string is not the same single precomposed character. For the exact glyph, use the Korean keyboard or copy it from the palette above.