Definition of heartland noun from the Oxford Advanced Learner's Dictionary

     

    heartland

     noun
    noun
    BrE BrE//ˈhɑːtlænd//
     
    ; NAmE NAmE//ˈhɑːrtlænd//
     
    (also heartlands [plural])
     
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  1. 1the central part of a country or an area the great Russian heartlands
  2. 2an area that is important for a particular activity or political party the industrial heartland of Germany the traditional Tory heartland of Britain’s boardrooms The party has lost seats in its traditional heartland of southern Thailand.
See the Oxford Advanced American Dictionary entry: heartland