Answer:
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.
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
Santa shakes his belly like a bowl full of me
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
My days are numbered.