Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Dŏmĭdūcus, i, m., and Dŏmĭdūca, ae, f. [domus-duco], the god that conducts home, epithet of Jupiter and Juno, as deities of marriage, who bring the bride to her husband’s home, Aug. Civ. D. 6, 9; 7, 3; Mart. Cap. 2, § 149.