I don’t think I intend anything other than the standard definition of the word: a place where something is stored.
But what is being stored, and how are we to regard it? Do you claim that the Bible is both a complete and solely authoritative record of God's word? Solely authoritative but not complete? Complete (to a point) but not solely authoritative?
It seems nitpicky, but in many respects those (and other) views of "repository" are characteristic of the various players in the many religious controversies we see around us.