According to Wikipedia it means "shaggy beard", but there is no cited source, and other websites either equally don't cite a source, don't know, or, in one case, suggest it means "living rock". Michael Quinion (World Wide Words) has a
page for the word, but he doesn't state a meaning for it, which I therefore take as "unknown".
I choose to think that it's meaning therefore is, "tastes good with chips" (in the same way that one source suggests that the "Weyba" in our nearby "Lake Weyba" means "place of flying squirrels").
Cheers,
Marc