Answer:
What is the smallest bridge in the world?
Has feathers but can't fly. Rests on legs but can't walk.
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
I'm a type of pizza that is folded in half before cooking to contain a filling
What is so fragile that saying its name breaks it?