Han Character 𡹎

No meaning is on record anywhere — only a pronunciation survived.

𡹎 is built from two pieces: 山, 'mountain,' on the left, and 𡇌 on the right — itself an old variant of 回, 'return.' Yet nothing written down explains what they meant together. It is not known from any text outside dictionaries, and the big Chinese dictionaries that list it — such as the Hanyu Da Zidian — give the reading and mark the meaning as unknown.

The one solid record is its sound. The Kangxi Dictionary of 1716, an authoritative character dictionary, records it with a single note — 音回, 'pronounced like 回' — citing the much older Longkan dictionary as its source. A sound, and nothing else: the entry offers no definition.

So if you met 𡹎 in the wild, there was no settled meaning behind it. Someone chose an extremely obscure glyph, or it surfaced from a dictionary, database or old-text archive where such characters are catalogued.

Why does a character with no meaning exist?

It has company — dictionaries passed down many sound-only entries.

The trail behind 𡹎 runs through the Longkan Shoujian, a dictionary compiled around 997 by the Buddhist monk Xingjun to help readers interpret the characters and variant forms in Buddhist manuscripts. It is the source the Kangxi entry cites for the sound.

When the Kangxi Dictionary was compiled in 1716 it re-catalogued entries like this one from older dictionaries — again a sound with no definition. In 2001, Unicode's Extension B — a supplementary block for rare and historic ideographs — took in more than 42,000 characters, many of them known chiefly from old dictionaries, so that digitized texts can reproduce them faithfully.

That is why 𡹎 exists in your character set yet has no meaning on record: it is a museum specimen, preserved so ancient texts stay typeable — not a word in living use.