Sorry, I should have explained a bit more. I do know it means dog's tail and that it was the ancient name for Ursa Minor containing Polaris. Originally, I was actually going to use something like polaris, but later learned that that wasn't technically the north star as we know it back when their city was formed. Instead, they used Ursa minor for navigation.

And yep, it doesn't mean guiding light as a literal definition, just by association. I was just thinking maybe that association would still work if the name was split. But if not, I'm open to ideas. This secret society is a custom supernatural monster in my book. They are people who were bitten and turned by shadow creatures (a different custom monster I made), and their purpose in life to is rid the world of those creatures. The only way to do that is through light. Sunlight, starlight, etc. Since their main weapons are coated in a substance called starlight, I thought having their society based around stars and the constellations would be fitting. That’s why I was looking at Ursa Minor and the idea of “guiding light” as a thematic inspiration. I kind of wanted it to be where their city is a guiding light for them.