Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
grānātum, i, v. granatus.
grānātus, a, um, adj. [granum], having many grains or seeds: mala, quae Punica vocantur, i. e. a pomegranate, Col. 12, 42, 1.
Hence, subst.: grānātum, i, n., a pomegranate: granata, Col. 12, 46, 2; Plin. 15, 28, 34, § 115; 20, 14, 53, § 149.