Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† mattĕa (mattya, mactĕa), ae, f., = ματτύα (v. Varr. L. L. 5, 22, § 112 Müll.), a dainty dish, dainty, delicacy, Suet. Calig. 38; Sen. Contr. 4, 27; Petr. 65: to mattea sola juvat (al. juvant, assuming a collat. form, mattĕum, i, n.), Mart. 10, 59, 4: inter quadrupedes mattea prima lepus, id. 13, 92, 2.