What 蠇 means
It names the oyster, an edible sea shellfish.
The early Chinese dictionary 《說文解字》 defines it as an edible sea shellfish. Its analysis assigns 虫 the meaning role and 萬 the sound role.
Where did 蠇 come from?
It is an older variant linked to 蠣.
Later Chinese reference works connect 蠇 and 蠣 as written forms of the same oyster word; 蠣 is the standard graph. If 蠇 renders as an empty box, the font lacks this glyph.
Historical and specialist; unusual in everyday conversation.
虫 is the meaning component here; the character still names an oyster.
Don't confuse it with
1Questions people ask
1Why does 蠇 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 蠇
蠇\8807Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.