Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Perseus.
flāvus, a, um, adj. [for flag-vus from FLAG, flagro, burning, light-colored], golden yellow, reddish yellow, flaxen-colored, ξανθός (mostly poet.): color, Col. 4, 3, 4: mellis dulci flavoque liquore, Lucr. 1, 938; 4, 13: mella, Mart. 1, 56, 10: aurum, Verg. A. 1, 592: Ceres, id. G. 1, 96; cf. of the same: et te, flava comas, frugum mitissima mater, Ov. M. 6, 118: mare marmore flavo, Enn. ap. Gell. 2, 26 (Ann. v. 377 ed. Vahl.): arva, Verg. G. 1, 316: crines, id. A. 12, 605: coma, Hor. C. 1, 5, 4; cf.: Galanthis flava comas, Ov. M. 9, 307: flavus comarum Curio, Sil. 9, 414: Ganymedes, Hor. C. 4, 4, 4: Phyllis, id. ib. 2, 4, 14: Chloë, id. ib. 3, 9, 19: Tiberis, reddish yellow (from the puzzolan earth on its ground), id. ib. 1, 2, 13; 1, 8, 8; 2, 3, 18: Tiberinus multa flavus harena, Verg. A. 7, 31; Ov. M. 14, 447: Lycormas, id. ib. 2, 245: pudor, blushing, Sen. Hippol. 652: capillus in flavum colorem, Vulg. Lev. 13, 36; 30.
Subst.: an de moneta Caesaris decem flavos, gold pieces (cf. Engl. yellow-boys), Mart. 12, 65, 6.
Comp.: flavior, Boëth. ap. Porphyr. Dial. 2, p. 31.