Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pŏlenta, ae, f. (collat. form pŏlen-tum, i, n., Cael. Aur. Tard. 3, 2; so plur.: pŏlenta, ōrum, Macr. S. 7, 15) [perh. from πάλη = pollen], peeled barley, pearl-barley: homines, qui polentam pinsitant, Plaut. As. 1, 1, 17; Cato, R. R. 168; Col. 6, 17, 18; Plin. 18, 7, 14, § 72; 24, 1, 1, § 3; 27, 8, 37, § 59; Ov. M. 5, 450; Pers. 3, 55; Vulg. Lev. 23, 14.