What does "safe" mean?

Additional senses

1. 2.Established in a safe, unenvied throne. Milton.
2. 3.Conferring safety; securing from harm; not exposing to danger; confining securely; to be relied upon; not dangerous; as, a safe harbor; a safe bridge, etc. "The man of safe discretion." Shak. The King of heaven hath doomed This place our dungeon, not our safe retreat. Milton.
3. 4.Incapable of doing harm; no longer dangerous; in secure care or custody; as, the prisoner is safe. But Banquo's safe Ay, my good lord, safe in a ditch he bides. Shak. Safe hit (Baseball), a hit which enables the batter to get to first base even if no error is made by the other side.
4. 5.A place for keeping things in safety. Specifically: (a) A strong and fireproof receptacle (as a movable chest of steel, etc., or a closet or vault of brickwork) for money, valuable papers, or the like. (b) A ventilated or refrigerated chest or closet for securing provisions from noxious animals or insects.
5. 6.To render safe; to make right. [Obs.] Shak.