According to Wikipedia, the word shrove is a form of shrive, which means to obtain absolution for one's sins. The whole thing gets a lot more convoluted on its way to becoming the rationale for a day dedicated to eating pancakes, and I'm already late with this week's email so nuts to trying to explain that!
The good news is that I found a sweet, starry-ish photo of a stack of them topped with one that's arguably shaped like a half moon, the feature pose for March 3rd's Restorative Yoga class. In Sanskrit, Ardha is half and Chandra is moon. Both of them are gluten-free, sugar-free and vegan, and neither of them is fattening. #goardhachandrasana