Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† splēn, ēnis, m., = σπλήν, the milt or spleen, Plin. 23, 1, 16, § 25; 24, 15, 80, § 131; 24, 19, 120, § 185; Col. 7, 10, 8; Vitr. 1, 4 med. al.: sum petulanti splene cachinno, Pers. 1, 12.