Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
vĭtĭlīgo, ĭnis, f. [vitium], a kind of cutaneous eruption, tetter, Cels. 5, 28, 19; Lucil. ap. Fest. p. 369 Müll.; Plin. 20, 15, 59, § 165; 21, 19, 75, § 129; 22, 25, 74, § 156; Just. 36, 2, 12; App. Mag. p. 306, 14.