(n) :
one of a series of numbered markers placed along a road at regular intervals, typically at the side of the road or in a median; an importantevent in a person's life or career, in the history of a nation, or in the life of some project
(n) :
one of a series of numbered markers placed along a road at regular intervals, typically at the side of the road or in a median; an importantevent in a person's life or career, in the history of a nation, or in the life of some project