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fish

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noun American English pronunciation: fish /fɪʃ/ 
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singularfish
pluralfish or fishes
  1. 1
    [countable] an animal that lives in water and swims. It breathes by using its gills and moves by using its tail and fins. Saltwater fish live in the ocean and freshwater fish live in rivers and lakes

    Little silver fish swam past.

    Did you catch any fish?

    Kenny keeps tropical fish.

    Thesaurus entry for this meaning of  fishThesaurus entry for this meaning of fish
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This is the American English definition of fish. View British English definition of fish.

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