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[C] a piece of metal, wood, rubber, etc. with a pointed edge at one end and a wide edge at the other, which is either pushed between two objects to keep them still or forced into something to break pieces off itPush a wedge under the door to keep it open while we're carrying the boxes in.
Pieces of stone can be split off by forcing wedges between the layers.
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[C] a triangular-shaped piece, especially of foodAuntie Ann put a huge wedge of fruit cake on my plate.
a wedge of cheese