Good point. I like that.The philosophical position that the question of the existence of God is meaningless, because the term "God" has no coherent and unambiguous definition.
FWIW, let's see how the same dictionary defines "God":
god
An extremely long entry follows, but here is the first definition offered:
OK, what is a deity? What is a supreme being?A deity or supreme being; a supernatural, typically immortal, being with superior powers, to which personhood is attributed.
A supernatural divine being; a god or goddess.
So it appears that we have a circular definition.A god, or a similar deity, characterized by power over all things.