Definition of hotline noun from the Oxford Advanced American Dictionary

     

    hotline

     noun
    noun
    NAmE//ˈhɑtlaɪn//
     
     
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  1. 1a special telephone line that people can use in order to get information or to talk about something a 24-hour confidential hotline An emergency hotline has been set up for the relatives of those involved in the disaster.
  2. 2a direct telephone line between the heads of government in different countries the hotline to the White House
See the Oxford Advanced Learner's Dictionary entry: hotline