Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. săburra, ae, f. [kindr. with sabulo], sand, esp. in ships as ballast: onerarias multā saburrā gravatas, Liv. 37, 14 fin.: fluctu jactante saburram, Verg. G. 4, 195; Plin. 16, 40, 76, § 201; 10, 23, 30, § 60.
2. Săburra (Sabbŭra), ae, m., a lieutenant of King Juba, Caes. B. C. 2, 38, 1; 40, 1; 41, 2; Hirt. B. Afr. 95, 1.
Form Sabbŭra, Sil. 15, 441; Luc. 4, 723.