[Lothiriel Silmarien]

I got a riddle although I don't know if I'm aloud to post one yet, I don't know the rules, but I hope it's alright if I put up my riddle.
What has no eyes but you see it, has no ears yet you hear it, and has no mouth but you feed it and things come out? (of it's "mouth", not the other end!)

I just made this riddle up right now sitting here cuz I looked over and thought, why not make one up about.....'it'.