Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dĭgĭtillum (-tellum), i, n. dim. [digitus], the plant house-leek, Col. 12, 7, 1; Plin. 18, 17, 45, § 159; 25, 13, 102, § 160; 26, 15, 92, § 163 al.