1. (noun)safety the state of being certain that adverse effectswill not be caused by some agent under defined conditions "insure the safety of the children"; "the reciprocal of safety is risk"
2. (noun)safety, refuge a safeplace "He ran to safety"
3. (noun)guard, safety, safety device a device designed to prevent injury or accidents
4. (noun)base hit, safety (baseball) the successful act of striking a baseball in such a way that the batter reaches base safely