Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Phărăo, ōnis, m., = Φαραώ (Hebrew [??]), Pharaoh, the title of the Egyptian kings: Pharao nomen est non hominis, sed honoris, sicut apud nos Augusti appellantur reges, cum propriis nominibus censeantur, Isid. Orig. 7, 6; Prud. Cath. 12, 141; Vulg. Gen. 12, 15 et saep.