Answer:
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
What is the heart of many risks, has a heart, but is not a living being?
What types of words are these: madam, civic, eye, level?
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
I am so simple that I can only point. Yet I guide men all over the world.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?