Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ălĭbĭlis, e, adj. [alo], affording nourishment, nutrilious, nourishing (perh. only in Varr.): lac, Varr. R. R. 2, 11, 2: casei, id. ib. 2, 11, 2, § 3.
Pass. of that which readily grows or fattens: ita pulli alibiliores fiunt, Varr. R. R. 3, 9.