Answer:
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive.
It holds most knowledge that has ever been said. But is not the brain, is not the head. To feathers and their masters, it's both bane and boonΒ One empty, and one full.
What goes through a door but never goes in. And never comes out?
It is worldwide, but once only a spider could weave one
What is it that has four legs, one head, and a foot?
Iβm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.