Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
gĭgērĭa, ōrum, n., the cooked entrails of poultry: gigeria intestina gallinarum cum hisetica (perh. hepatica, al. isiciis) cocta. Lucilius, lib. VIII.: gigeria sunt sive adeo hepatia, Non. 119, 20 sq.: gigeria optime facta, Petr. 66: pullorum coquere, Apic. 4, 2 med.
Note: The explanation in Paul. ex Fest. p. 95 Müll., gigeria ex multis obsoniis decerpta, is evidently corrupt.