Y’arrrr me leg be gone but still. A wooden post now fits the bill. What what is this thing that keeps me steady?

The first word is only three letters, but the definition is always questionable. Some wonder if life imitates it or does it imitate life? The second word is four letters long defined as a thing that is proven or known to be true. I will be in the middle of these two words and make a word that means a man-made object, tool or relic.

I have one eye and sometimes blink, I see the world and can remember what I think, I steal your soul, some people say, But only when you look my way. A moments pause, a breath held tight, Exposure made, now locked in light.

You use it between your head and your toes, the more it works the thinner it grows. What is it?

I can be a coats warm lining. Or, take ya for all you’ve got.