Answer:
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
What has three ways out and just one way in?
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Goes over all the hills and hollows. Bites hard, but never swallows.
What never gets any wetter no matter how hard it rains?