Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sublĭcĭus, a, um, adj. [sublica], consisting of or resting upon piles: Pons Sublicius, the pile-bridge, a wooden bridge across the Tiber, built by Ancus Marcius, Liv. 1, 33; 2, 10; Sen. Vit. Beat. 25, 1; Plin. 36, 15, 23, § 100; Tac. H. 1, 86; Varr. L. L. 5, § 83, and 6, § 44 Müll.; Fest. p. 293 ib.; cf. Becker, Antiq. 1, p. 693 sq.
As the place where beggars sat, Sen. Vit. Beat. 25.