Definition of danger noun from the Oxford Advanced American Dictionary

      

    danger

     noun
    noun
    NAmE//ˈdeɪndʒər//
     
     
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  1. 1[uncountable] danger (of something) the possibility of something happening that will injure, harm, or kill someone, or damage or destroy something Danger! Keep Out! Children's lives are in danger every time they cross this road. animals in danger of extinction Doctors said she is now out of danger (= not likely to die).
  2. 2[countable, uncountable] the possibility of something bad or unpleasant happening There is no danger of a bush fire now. danger of something The building is in danger of collapsing. How many factory workers are in danger of losing their jobs? “Nicky won't find out, will she?” “Oh, no, there's no danger of that.” danger that… There is a danger that the political disorder of the past will return.
  3. 3[countable] danger (to somebody/something) a person or thing that may cause damage, or harm someone Smoking is a serious danger to health. Police said the man was a danger to the public. the hidden dangers in your home see also endanger
See the Oxford Advanced Learner's Dictionary entry: danger