Available Definitions:
1) a. - Capable of being passed, traveled, navigated, traversed, penetrated, or the like; as, the roads are not passable; the stream is passablein boats.
2) a. - Capable of being freely circulated or disseminated; acceptable; generally receivable; current.
3) a. - Such as may be allowed to pass without serious objection; tolerable; admissable; moderate; mediocre.