Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. pāpa (pappa), ae, f. [onomatopoeia], the word with which infants call for food: cum cibum ac potionem buas ac papas vocent, Varr. ap. Non. 81, 4.
2. pāpa, ae, m. [onomatopoeia], a father, papa; hence, in eccl. writers, a bishop: optime papa, Prud. στεφ. 11, 127; Tert. Pudic. 13.
3. Papa, a Roman surname, Inscr. Don. Cl. 7, n. 32.