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.