This definition, misquoted, misunderstood, misused, with many variations in different dictionaries, and as many are aware, has no counterpart in language. i.e. There are no aghost.
Almost since theism was given it's name, so to was the atheist. An understood opposite. Used primarily in a derogatory manner.
Yet for many this is not the case. Maybe for some but that's more of a hard view on it. I see it as any other supernatural phenomena. It's a cool story, don't teach it at schools or as fact unless it can be shown as fact.(testable, scientific, empirical...)
Maybe a hard definition agreed on by most dictionaries, a new term defining this thought is needed. Break the stigma of the archaic derogatory term?