safety

(noun) the state of being certain that adverse effects will not be caused by some agent under defined conditions. Examples: "Insure the safety of the children." "The reciprocal of safety is risk."

(noun) a safe place. Synonyms: refuge. Examples: "He ran to safety."

(noun) a device designed to prevent injury or accidents. Synonyms: guard, safety device.

(noun) (baseball) the successful act of striking a baseball in such a way that the batter reaches base safely. Synonyms: base hit.

(noun) contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse. Synonyms: condom, rubber, safe, prophylactic.

(noun) a score in American football; a player is tackled behind his own goal line.