I'm not dead, i'm not alive, i'm not underground, i'm high up in the sky, people speak of me but never saw me. Who am i?
I have a thumb and four fingers, but I have no flesh or bone. Who am I?
I do not have fingers, but I have a ring. Dogs bark when they hear me ding. I introduce visitors, though not by their names. Naughty little children push me in their games.
What am I?