the GNU version of the Collaborative International Dictionary of English
n. A stone set along a margin as a limit and protection, as along the edge of a sidewalk next the roadway; an edge stone.
The Century Dictionary and Cyclopedia
n. A stone placed against earth or brick- or stonework to prevent it from falling out or spreading.
n. Specifically, one of the stones set together on edge at the outer side of a sidewalk, forming a curb.
n. Formerly also spelled kerbstone, kirbstone.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a paving stone forming part of a curb
Word Usage
"For the curbstone was a rocking precipice, and the street below it a grey and shimmering stream, that rolled, and flowed, and rolled, and never rested."