Definition of safety noun from the Oxford Advanced American Dictionary

      

    safety

     noun
    noun
    NAmE//ˈseɪfti//
     
    (pl. safeties)
     
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  1. 1[uncountable] the state of being safe and protected from danger or harm a place where children can play in safety The police are concerned for the safety of the 12-year-old boy who has been missing for three days. He was kept in custody for his own safety.
  2. 2[uncountable] the state of not being dangerous I'm worried about the safety of the treatment. safety standards a local campaign to improve road safety The airline has an excellent safety record.
  3. 3[uncountable] a place where you are safe I managed to swim to safety. We watched the lions from the safety of the car. They reached safety seconds before the building was engulfed in flames.
  4. 4 [countable] a device that stops a gun from being fired or a machine from working by accident Is the safety on?
  5. 5 [countable] (in football) a defensive player who plays in a position far away from the other team
  6. Idioms
    safety first(saying)
     
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    safety is the most important thing
    there's safety in numbers(saying)
     
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    being in a group makes you safer and makes you feel more confident
See the Oxford Advanced Learner's Dictionary entry: safety