a piece of wood, metal, etc that tapers to a thin edge and is used e.g.esp for splitting wood or for raising or securing heavy objects
something wedge-shaped
a wedge of cheese
a shoe with a wedge-shaped sole raised at the heel and tapering towards the toe
an iron golf club with a broad face angled for maximum loft, used esp for bunker shots and short pitches to the green
to cause a breach or separation between
something apparently insignificant that is the forerunner of a more important development