noun
ghost character; phantom kanji
A kanji included in the JIS X 0208 character set whose origin and meaning are unknown; often believed to be a copying error or fabrication. Examples include 妛, 彁, and 墸.
JIS漢字には、幽霊文字と呼ばれる出自不明の文字がいくつか含まれている。
The JIS kanji set includes several characters of unknown origin called ghost characters.
「妛」は有名な幽霊文字の一つだ。
'妛' is one of the well-known ghost characters.