(n.) A large pebble; a rounded stone not too large to be handled; a small boulder; -- used for paving streets and for other purposes.

Tarmac Tarvia asphalt bitumen bituminous macadam blacktop brick carpet causeway cement cobble concrete curb curbing curbstone edgestone flag flagging flagstone floor gravel kerb kerbstone macadam metal pave pavement pavestone paving paving stone pebble road metal stone tar tarmacadam tile washboard