noun Ot·to·ri·no [awt-taw-ree-naw] /ˌɔt tɔˈri nɔ/, 1879–1936, Italian composer. nounOttorino (ottoˈriːno). 1879–1936, Italian composer, noted esp for his suites The Fountains of Rome (1917) and The Pines of Rome (1924)