cataract

/ˈkætəˌrækt/
noun
  1. A medical condition in which the lens of the eye becomes cloudy, causing blurred vision.
    • My grandmother had surgery to remove a cataract from her left eye.
    • Cataracts are common in older adults but can be treated effectively.
    • Reading became difficult for him after he developed a cataract.
  2. A large, powerful waterfall, or a series of rapids in a river.
    • We could hear the roar of the cataract from a mile away.
    • The boat carefully navigated the cataracts of the Nile River.
    • The canyon was carved by ancient cataracts over millions of years.
Synonyms
What does "cataract" mean? | whatsthatwordmean | whatsthatwordmean