Lewis & Short

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.

  1. B. In Spain, a measure of land, Col. 5, 1, 5.