I can fly but have no wings. I cry but have no eyes. What am I?

I'm a traveler from the sky, In frozen form, I swiftly fly. With a loud patter, I touch the ground, What am I?

I have been around for over two hundred million years, and my ancestors are not that different from me. My grip is strong, so don't roll your eyes, or you may end up in my thighs. You can find me in water or land, though water is more my landscape.

I share my name with a sin, but I am not an abstract concept. People often compare laziness with me.

I share a name with a famous singer, a legendary fantasy weapon and something certain invertebrates do. What am I?