Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. porca, ae, f. [porcus], a female swine, a sow, Cato, R. R. 134; Pall. 3, 26.
By poet. license for a male swine, a boar, Verg. A. 8, 641 Serv.; cf. Quint. 8, 3, 19: tenera, Juv. 2, 86.
2. porca, ae, f. [cf. O. H. Germ. furh; Germ. Furche; Engl. furrow], the ridge between two furrows, a balk (cf. lira), Varr. L. L. 5, § 39 Müll.; id. R. R. 1, 29; Col. 11, 3, 44.