Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Sĭcambri, v. Sigambri.
Sĭgambri (also Sĭcambri, Sy-gambri, and Sŭgambri), ōrum, m., = Σύγαμβροι, Ptol. Dio Cass.; Σούγαμβροι, Strabo, a powerful people of Germany, between the Sieg and the Ruhr, and as far as the Lippe (the mod. Cleve, Berg, and Recklingshausen), Caes. B. G. 4, 16; 4, 18 sq.; 6, 35; Hor. C. 4, 2, 36; 4, 14, 51; Tac. A. 2, 26; 12, 39; Suet. Aug. 21; Mart. Spect. 3, 9.
Hence,