Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Flŭōnĭa (coll. forms, Flŭvĭōnĭa, Arn. 3, 30: Flŭvōnĭa, Mart. Cap. 2, § 149), ae, f. [fluo], a surname of Juno, so called: quod eam sanguinis fluorem in conceptu retinere putabant, Varr. ap. Aug. Civ. D. 7, 2 sq.; Arn. 3, 118; Paul. ex Fest. p. 92 Müll.