Lewis & Short

Barcĭno or -on, ōnis, f., the present city Barcelona, in Spain, Plin. 3, 3, 4, § 22; Mel. 2, 6, 5; Aus. Ep. 24, 89; Prud. στεφ. 33.
Hence, Barcĭnōnensis, e, adj., of Barcelona: muria, Aus. Ep. 21 init.