'Cataract' definitions:

Definition of 'cataract'

From: WordNet
noun
An eye disease that involves the clouding or opacification of the natural lens of the eye
noun
A large waterfall; violent rush of water over a precipice

Definition of 'Cataract'

From: GCIDE
  • Cataract \Cat"a*ract\, n. [L. cataracta, catarracles, a waterfall, Gr. ?, ?, fr. ? to break down; in the passive, to fall or rush down (of tumors) to burst; kata` down + ? to break.]
  • 1. A great fall of water over a precipice; a large waterfall. [1913 Webster]
  • 2. (Surg.) An opacity of the crystalline lens, or of its capsule, which prevents the passage of the rays of light and impairs or destroys the sight. [1913 Webster]
  • 3. (Mach.) A kind of hydraulic brake for regulating the action of pumping engines and other machines; -- sometimes called dashpot. [1913 Webster]

Synonyms of 'cataract'

From: Moby Thesaurus