Definition of cataract noun from the Oxford Advanced American Dictionary

     

    cataract

     noun
    noun
    NAmE//ˈkæt̮əˌrækt//
     
     
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  1. 1 a medical condition that affects the lens of the eye and causes a gradual loss of sight
  2. 2 (literary) a large, steep waterfall
See the Oxford Advanced Learner's Dictionary entry: cataract