Yr is the letter Y
Anglo-Saxon Rune Poem (from ragweedforge.com)
Yr is a source of joy and honour to every prince and knight;
it looks well on a horse and is a reliable equipment for a journey
Yr reversed indicates a lack of focus and efficiency, where the talent or skill is not sufficient to meet the demands being placed before you. You might have to work harder then before, or work to pull through, experiencing a struggle to succeed where before things were much easier. It’s not that it cannot be done, but that the situation has changed and obstacles that were not present before have been placed before you.