i had only skimmed this link and not even wondered about the name - but learned the meaning serendipitously within 2 minutes when it popped up in the OTHER hackernews link i had opened: https://news.ycombinator.com/item?id=48118478 which links to https://en.wikipedia.org/wiki/England_runestones

Futhark appears in the first paragraph! i don't think i ever read the term before