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English definition of “isthmus”

isthmus

noun [C] (LAND)    /ˈɪsθ.məs/ /ˈɪs-/ specialized
a narrow piece of land with water on each side that joins two larger areas of land : the Isthmus of Panama Promontories and peninsulas
(Definition of isthmus noun (LAND) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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