Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Perseus.
The word Lilybæum could not be parsed. Trying a normal dictionary lookup:
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Lĭlybaeum or -ŏn (Ov. M. 13, 726), i, n., = Λιλύβαιον, a promontory on the southern coast of Sicily, with a town of the same name, now Capo Bœo, Mel. 2, 7; 15; 16; Plin. 3, 8, 14, § 87; Cic. Div. in Caecil. 12, 39; 17, 56; Liv. 25, 31; 27, 5; Ov. M. 5, 351 al.
Called also Lĭlybē, ēs, f., acc. to the Gr. Λιλύβη, Prisc. Perieg. 482.
Hence,