(n.) A stone /et along a margin as a and protection, as along the edge of a sidewalk next the roadway; an edge stone.

Tarmac Tarvia asphalt bitumen bituminous macadam blacktop border stone brick cement cobble cobblestone concrete curb curbing edgestone flag flagging flagstone gravel kerb kerbstone macadam pavement pavestone paving paving stone road metal stone tarmacadam tile washboard