[{"Bold_text": "noun", "List Items": ["a descent of water over a steep surface; a waterfall, especially one of considerable size.", "any furious rush or downpour of water; deluge.", "Ophthalmology.an abnormality of the eye, characterized by opacity of the lens.the opaque area.", "an abnormality of the eye, characterized by opacity of the lens.", "the opaque area."]}]