noun
ornamental border; decorative rim
Refers to a decorative border or rim, often on objects like mirrors, dishes, or traditional crafts.
この鏡には美しい覆輪が施されている。
This mirror has a beautiful ornamental border.
Compound of 覆 (cover) and 輪 (ring, rim). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning of a decorative border.