1) Kerbstone 2) Limit 1) Kerbstone 2) Part of the sidewalk scene 3) Paving stone 4) Sidewalk section 
• (n.) A stone /et along a margin as a and protection, as along the edge of a sidewalk next the roadway; an edge stone.
Curb'stone` (kûrb'stōn`) noun A stone set along a margin as a limit and protection, as along the edge of a sidewalk next the roadway; an edge stone. Curbstone broker . 
A curbstone is a stone set along a margin as a limit and protection, as along the edge of a sidewalk next the roadway as an edge stone.
[n] - a paving stone forming part of a curb
kerbstone noun a paving stone forming part of a curb
one of the stones, or a range of stones, forming a curb, as along a street.