Yi syllable jjuox

It marks a syllable, not a standalone English word.

In the Liangshan regional standard for Nuosu, a Yi language, ꐠ is romanized jjuox and transcribed [ʥɔ³⁴]. It sounds roughly like a voiced j-like consonant followed by an open o; ³⁴ marks a rising tone. The romanization names a sound-and-tone unit, not an English gloss; surrounding syllables supply its meaning.

How did Yi writing develop?

Yi writing had varied traditional forms before the Liangshan standard.

Yi tradition links the script's invention to Aki, a figure in its origin story, during China's Tang era. The earliest securely dated surviving Yi inscription is on a bronze bell bearing Yi and Chinese text, from 1485; undated manuscripts may be older. Bimo, Yi ritual specialists, used traditional writing for religious, magical, medical and family-history texts.

The Liangshan form was designed in 1974 and officially promulgated in 1980 to improve literacy. It selected forms from older writing for one regional dialect, while traditional Yi writing remained locally varied. Traditional Yi is generally not considered directly derived from Han Chinese characters, though the relationship is debated.

What does ꐠ mean when someone sends it alone?

Alone, it does not reveal a complete message.

A Nuosu writer may be using it as an ordinary syllable within a word or sentence. Treat it as a fragment until you see the surrounding phrase.