Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Dāvīd, m. indecl., or vīdis (gen. David, Aus. Ephem. 3, 84: Davidis, Juvenc. 1, 151; acc. -vīda, Juvenc. 2, 577: David, Vulg. 2 Reg. 23, 16), the second king of the Jews, and principal author of the Book of Psalms, Tert. adv. Jud. 9 et 12; Vulg. Ruth 4, 17 et saep.
Hence, Dāvīdĭcus, a, um, adj., of or belonging to David: urbs, Sedul. Carm. 4, 42: lyra, Cassiod. Var. 2, 20.