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Definition of Alexander Selkirk
1. Noun. Scottish sailor who was put ashore on a deserted island off the coast of Chile for five years (providing the basis for Daniel Defoe's novel about Robinson Crusoe) (1676-1721). 
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1. Noun. Scottish sailor who was put ashore on a deserted island off the coast of Chile for five years (providing the basis for Daniel Defoe's novel about Robinson Crusoe) (1676-1721).