Answer:
Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is 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.
I grow for a surface, even if you cut me. I continue to grow even after death.
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
What has a mouth but can't chew?
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?