Answer:
What is that you will break everytime you name it?
A horrid monster hides from the day, with many legs and many eyes. With silver chains it catches prey. And eats it all before it dies. Yet in every cottage does it stay. And every castle beneath the sky.
You saw me where I never was and where I could not be. And yet within that very place, my face you often see.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
People take me on walks and I run and have fun. What am I?