Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

ā̆prūgnus (also ā̆prūnus), a, um, adj. [aper], of or belonging to the wild boar: aprugnum callum, Plaut. Pers. 2, 5, 4 Ritschl; cf. id. Poen. 3, 2, 2: aprunus adeps, Plin. 28, 11, 47, § 167 Jan: lumbus, id. 8, 51, 78, § 210.
Hence, ā̆prūgna (ā̆prūna), ae, f. (sc. caro), the flesh of a wild boar, Capitol. Max. Jun. 2.
A secondary form, ā̆prūgĭnĕus, a, um, Sol. 32.