I couldn't think of a good name. I had ideas of something like Meteor or Hurricane or Tornado. The first was taken, and I -very- quickly had second thoughts about the other two.

My mom, from time to time, mentioned that she really liked the name Lily. After giving it a lot of thought, I said, "You know, why not go with that?"

I've grown to like it.

I think it's a great choice, it's catchy, short, simple and kind. A perfect fit for a programming language, I love it.