瑪瑙: agate

(obsolete) The hentaigana syllable that is used to represent ku in old Japanese text.

Only used in 𪜪坂 (Sagisaka, surname)

(chemistry) a benzene ring with two substituents in alternate positions / (chemistry) an oxyacid with relatively few water molecules

meta-

(cant, jargon) German silver

(dialectal, Northwestern Kyūshū) a lamp shell, lingulate brachiopod (Lingulidae)

(Hachijō) oriental turtle dove

a black circle circled by a white circle (◉)

(slang) meta