noun Lu·ca [loo-kuh; Italian loo-kah] /ˈlu kə; Italian ˈlu kɑ/, Luca Fapresto, 1632–1705, Italian painter. Um·ber·to [oo m-ber-toh, uhm-; Italian oom-ber-taw] /ʊmˈbɛr toʊ, ʌm-; Italian umˈbɛr tɔ/, 1867–1948, Italian composer of operas.