( BrE ) ( NAmE curb ) / kɜːb; NAmE kɜːrb/ noun
the edge of the raised path at the side of a road, usually made of long pieces of stone :
The bus mounted the kerb (= went onto the pavement / sidewalk ) and hit a tree.
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WORD ORIGIN
mid 17th cent. (denoting a raised border or frame): variant of curb .