a repeated line or number of lines in a poem or song, typically at the end of each verse
The fact that such a (patchwork) quilt does not have to take the shape of a rectangle or a square, but can become totally lopsided and develop in any direction or many directions, doesn't mean there can't be colors or textures that repeat here and there, creating patterns; the book definitely has conceptual motifs or refrains flowing through it, resurfacing here and there in sometimes slightly different forms or terms, only to re-submerge and then reappear elsewhere. In this respect, this book could be said to resemble a musical score ... (ibid, 304/3787, italics added)
