Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
grānum, i, n. [root gar-; Sanscr. ǵaramí, wear away; whence Gr. γέρων, γραῦς; cf. γῦρις, fine flour], a grain, seed, small kernel: tritici, Plaut. Stich. 4, 1, 52; Cic. Div. 1, 36, 78; cf. Varr. R. R. 1, 48, 2; Col. 2, 9, 13: uvae, Ov. Tr. 4, 6, 10; Val. Max. 9, 12, 8 ext.: turis, Plaut. Poen. 2, 3; cf. turea, Ov. F. 4, 410: fici, Cic. de Sen. 15, 52; Plin. 24, 5, 10, § 16: piperis, a pepper-corn, id. 12, 7, 15, § 30; 23, 8, 78, § 150: papaveris, Ov. Tr. 5, 2, 24 et saep.: salis, Plin. 23, 8, 77, § 149: cerae mili magnitudine, id. 22, 24, 55, § 116: marmoreum, marble granules, pounded marble, Pall. 1, 15; Vitr. 7, 3 med.