Sublica, sublicæ, f. g. pe. cor. quæ & Sublicium dicebatur. Cæ. A proppe: a shore: a poste or other like thing to sustaine or kepe vp. A pile driuen into the ground for building or other like purpose.
Lewis and Short: Latin dictionary
sublĭca, ae, f., a stake or pile driven into the ground, a palisade (cf.: palus, sudes, stipes), Caes. B. C. 3, 49; Liv. 23, 37; Vitr. 3, 3.—Esp., of the piles for a bridge, Caes. B. G. 4, 17; 7, 35; Liv. 1, 37.—In the form sublices, Sall. H. Fragm. 4, 77; cf. Gloss. Labb.