Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
trans-ădĭgo, ēgi, actum, 3, v. a., to thrust through, pierce through (poet. and in post-Aug. prose; syn. traicio): costas et crates pectoris ensem, Verg. A. 12, 508; so, gladium per medium pectus, App. M. 4, p. 147: ferrum sub papillam dexteram, id. ib. 8, p. 207: horum unum ad medium … Transadigit costas, Verg. A. 12, 276; so, aliquem ferro, Stat. Th. 5, 125: aliquem jaculo, Sil. 10, 141: injecta lancea alterum per pectus medium transadegit, App. M. 9, p. 234, 37.