Also known as: 雷紋, メアンドロス模様, 雷文
A decorative Border, formed by a continuous line that meanders in a repeating fashion.
The meandros was a common element in Greek art. On Danbooru, this more often refers to the repeating pattern on the edge of Ramen Bowls, also known as the Chinese cloud-and-thunder/lightning motif (Xiangyun).