Answer:
What is long and slim, works in light. Has but one eye, and an awful bite?
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away, yet lust for me keeps me locked away.
I have split the one into five. I am the circle that few will spy. I am the path that breaks and gives. I am the bow no man may bend.
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
What did the piece of wood say when he saw the screwdriver and screws approaching?