Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Lĕbĕdus (-dos), i, f., = Λέβεδος, a city on the coast of Ionia, north of Colophon; where every year great theatrical games were celebrated in honor of Bacchus, Hor. Ep. 1, 11, 6 sq.; Mel. 1, 17, 2; Plin. 5, 29, 31, § 116.