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

 

castaway

 noun
noun
BrE BrE//ˈkɑːstəweɪ//
 
; NAmE NAmE//ˈkæstəweɪ//
 
 
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a person whose ship has sunk (= who has been shipwrecked) and who has had to swim to a lonely place, usually an island
See the Oxford Advanced American Dictionary entry: castaway