canto

n. section in a long poem

The canto is a principal form of division in a long poem, especially the epic. The word comes from the Latin cantus, meaning "song," and has a corrolary in the Sanskrit , or "chapter." Famous examples of epic poetry which employ the canto division are Valmiki's  The Ramayana (7 cantos),  Dante's The Divine Comedy (100 cantos), and Ezra Pound's The Cantos (120 cantos).
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Noun
1. the highest part (usually the melody) in a piece of choral music
(hypernym) voice part
2. a major division of a long poem
(hypernym) section, subdivision
(part-holonym) poem, verse form

n. canto, section in a long poem

n. song, singing; lyric; chant, canto; corner

v. sing, crow, squeal