Answer:
A hole in a pole, though I fill a hole in white. I'm used more by the day, and less by the night.
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
Big as a biscuit, deep as a cup, but even a river can’t fill it up. What is it?
A serpent swam in a silver urn, A golden bird did in its mouth abide, The serpent drank the water, this in turn, Killed the serpent. Then the gold bird died.
It is by nature, soft as silk; A puffy cloud, white as milk; Snow tops this tropical crop; The dirtiest part of a mop
People take me on walks and I run and have fun. What am I?