Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pŏlīmenta, ōrum, n. [1. polio], the testicles: porcina, Plaut. Men. 1, 3, 28 (dub.; Ritschl, sincipitamenta); cf. Fest. p. 234 Müll.