Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Hĕcŭba, ae, and Hĕcŭbē, ēs, f., = Ἑκάβη, the daughter of Dymas, wife of Priam; after the destruction of Troy the slave of Penelope, changed through rage into a dog, Verg. A. 2, 501; 515; Ov. M. 13, 423; 549 sq.; 577; Cic. Tusc. 3, 26, 63; id. Fat. 15, 34.
Transf., an ugly old woman (opp. to Andromache), Mart. 3, 76, 4.