Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. Rhoetēus, a, um, adj., = Ῥοιτειος, of or belonging to the promontory of Rhœteum, Rhœtean: profundum, the sea that washes it, Ov. M. 11, 197; cf. litora, Plin. 5, 30, 33, § 125; and subst.: Rhoeteum rapax, Ov. F. 4, 279.
Hence poet., in gen., of or belonging to Troy, Trojan: ductor, i. e. Æneas, Verg. A. 12, 456: litora, Luc. 6, 351: fata, Sil. 1, 115.