Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pŏdĭa, ae, f., a rope fastened to one of the lower corners of a sail, for the purpose of setting it to the wind; in Engl. nautical lang., a sheet, Serv. Verg. A. 5, 830 (al. podium).