Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
‡ luscĭtĭo, ōnis, f. [luscus], dimness of sight, Dig. 21, 1, 10, § 4: vitium oculorum, quod clarius vesperi quam meridie cernit, Paul. ex Fest. p. 120, 17 Müll.