Lewis & Short

1. Lūca, ae, f.,

  1. I. a city of Etruria, now Lucca, Cic. Fam. 1, 9, 9; Liv. 21, 59, 10; 41, 17; Front. Strat. 3, 2.
    Hence,
  2. II. Lū-censis, e, adj., of Lucca: municipium, Cic. Fam. 13, 13.