Repetition is when a word or sentence is used more than once within a poem.
Repetition of a word or sentence happens a lot in musical lyrics. For example in the Black Eyed Peas - Let's Get It Started song where they repeat: "and the base keeps runnin' runnin', keeps runnin' runnin', and keeps runnin' runnin''"... well, you get it.
Poetry Term: