wedge in Polish

One of the simple machines; a piece of material, such as metal or wood, thick at one edge and tapered to a thin edge at the other for insertion in a narrow crevice, used for splitting, tightening, securing, or levering.

A piece (of food, metal, wood etc.) having this shape.

(archaic) A flank of cavalry acting to split some portion of an opposing army, charging in an inverted V formation.