cataract
cataract n
Fr. cataracte, waterfall, portcullis, floodgate < Gk καταρ(ρ)άκτης, down-rushing.
- Waterfall; cascade; flood; downpour; deluge; torrent of water; [fig.] dusk; cloud cover; darkness after the sun goes down; [word play] opacity of the eye; reduced vision; cloudiness in the lens of the eye; visual impairment treated with iodine.