cobblestone

Etymology

From Middle English cobylstone, cobyllstone, kobilstane, kobill-stane, equivalent to cobble + stone. Compare Old Norse köppusteinn (“boulder”), Danish kampesten (“boulder”).

noun

1. (countable) A rounded stone from a river bed, fit for use as ballast in ships and for paving roads.
   In restless dreams I walked alone / Narrow streets of cobblestone 1964, “The Sound of Silence”, in Wednesday Morning, 3 A.M., performed by Simon & Garfunkel
2. (uncountable) Cobblestones viewed as a building or paving material.
   The road was paved in cobblestone.