Vestal

Someone assumed that since I am a "linguist", I'd know the meaning of "vestal"--they wanted to know why they're called "vestal virgins."

Well I didn't know the meaning of vestal, so I looked it up:

a virgin consecrated to the Roman goddess Vesta and to the service of watching the sacred fire perpetually kept burning on her altar

So now you know. Now you can impress your friends with obscure language knowledge :)

(And for the record, I'm not a linguist--I'm just into languages. For some reason, people think I'm a linguist. I don't know why. Maybe it's because there aren't a lot of non-linguist language lovers out there.)