Il Penseroso
[ il pen-suh-roh-soh; Italian eel pen-se-raw-saw ]
/ ɪl ˌpɛn səˈroʊ soʊ; Italian il ˈpɛn sɛˈrɔ sɔ /
noun
a poem (1632) by John Milton.
Compare
L'Allegro.