1. a region of central Italy, on the Ligurian and Tyrrhenian Seas: corresponds roughly to ancient Etruria; a region of numerous small states in medieval times; united in the 15th and 16th centuries under Florence; united with the rest of Italy in 1861. Capital: Florence. Pop: 3 516 296 (2003 est). Area: 22 990 sq km (8876 sq miles) Italian name Toscana