safe

(noun): A box, usually made of metal, in which valuables can be locked for safekeeping.
(noun): A condom.
(noun): A ventilated or refrigerated chest or closet for securing provisions from noxious animals or insects.
(noun): A safety bicycle.
(verb): To make something safe.
(adjective): Not in danger; out of harm's reach.
(adjective): Free from risk.
(adjective): Providing protection from danger; providing shelter.
(adjective): When a batter successfully reaches first base, or when a baserunner successfully advances to the next base or returns to the base he last occupied; not out.
(adjective): Properly secured.
(adjective): (used after a noun, often forming a compound) Not susceptible to a specified source of harm.
(adjective): Great, cool, awesome, respectable; a term of approbation, often as interjection.
(adjective): Lenient, usually describing a teacher that is easy-going.
(adjective): Reliable; trusty.
(adjective): Cautious.
(adjective): Of a programming language, type-safe or more generally offering well-defined behavior despite programming errors.