Definition of halloo exclamation from the Oxford Advanced American Dictionary

     

    halloo

     exclamation
    exclamation
    NAmE//həˈlu//
     
    , NAmE//hæˈlu//
     
     
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  1. 1used to attract someone's attention
  2. 2used in hunting to tell the dogs to start chasing an animal
hallooverb[transitive, intransitive]halloo (somebody)
 
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