Cobble
COBBLE,
COBBLE-STONE, noun A roundish stone; a pebble; supposed to be a fragment, rounded by the attrition of water. We give this name to stones of various sizes, from that of a hens egg or smaller, to that of large paving stones. These stones are called by the English copple-stones and bowlder-stones or bowlders. The latter name is among us known only in books.
COBBLE, verb transitive
1. To make or mend coarsely, as shoes; to botch.
2. To make or do clumsily or unhandily; as, a cobble rhymes.