Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Haemon, ŏnis, m., = Αἵμων, a son of Creon, king of Thebes, the lover of Antigone, Prop. 2, 8, 21; Ov. Tr. 2, 402; id. Ib. 563; Hyg. Fab. 72.