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Refrain, phrase, line, or group of lines repeated at intervals throughout a poem, generally at the end of the stanza. Refrains are found in the ancient Egyptian Book of the Dead and are common in primitive tribal chants. They appear in literature as varied as ancient Hebrew, Greek, and Latin verse, popular ballads, and Renaissance and Romantic lyrics.
Studying examples of poems using various poetic devices like refrain helps create an understanding of how those poetry terms work within different types of poetry. For instance examples of poems using onomatopoeia can illustrate how sounds can be represented in poems. Likewise, examples of poems using alliteration can shed light on how alliteration affects the rhythm of a poem. Many poems can be an example of refrain, but sometimes good examples are hard to find.