means A patchwork is something made by sewing together small, often mismatched pieces of fabric into a larger whole — or, by extension, anything assembled from odd, varied parts.

from A plain English compound, stitched as literally as the thing it names: a "patch" (a small piece of cloth used to mend, a word of uncertain medieval origin, possibly tied to "piece") joined to "work." It surfaces around the 17th century, describing exactly what thrifty hands did with leftover scraps — and only later did it grow its figurative sense, applied to anything cobbled together from unmatched bits, from quilts to legislation.