From Middle English 'cobel' (round lump) + stone—naturally rounded stones used for rough paving.
A naturally rounded stone formerly used to pave streets and paths.
From Middle English 'cobel' (a round lump) + 'stone.' The first element is probably related to 'cob' meaning a rounded lump or head. A cobblestone is a 'lumpy stone'—rounded by water rather than cut by a mason. Key roots: cob (Middle English: "round lump, head").