Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
faenĭ-sĭcĭa (fēn-, foen-), ae, f., and ōrum, n. [faenum, I.; seco], mown hay: addere faenisiciae cumulum, Varr. R. R. 1, 49, 1; 1, 47 and 56: vindemias ac faenisicia administrare, id. ib. 1, 17, 2; 2, 11, 7; 3, 2, 6; Col. 2, 17, 6.
fēnĭsĭcĭa, v. faenisicia.