Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† splēnĭcus, a, um, adj., = σπληνικός, splenetic; subst., a person affected with spleen, a splenetic, Plin. 20, 9, 34, § 87; 24, 10, 47, § 79; 31, 11, 47, § 128; Pall. Jul. 6, 2.