Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ănătīnus, a, um, adj. [anas], of or pertaining to the duck: Utinam fortunam nunc [ego] anatinam uterer, Uti quom exivissem ex aquā, arerem tamen, * Plaut. Rud. 2, 6, 49.
Hence, ănătīna, ae, f. (sc. caro), duck-flesh, duck, Petr. 56, 3.