1a piece of wood, metal, etc. having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them:the door was secured by a wedge
an object or piece of something shaped like a wedge:a wedge of cheese
a formation of people or animals in the shape of a wedge:the wedge of horsemen crashed forward
2a golf club with a low, angled face for maximum loft.
a shot made with a wedge:Davies hit a wedge to within a yard of the hole
3a shoe with a fairly high heel forming a solid block with the sole.
a heel on a wedge shoe.
4 [mass noun]British informal money or earnings:he invested his wedge in stocks and shares
1 [with object] fix in position using a wedge: [with object and complement]:the door was wedged open
2 [with object and adverbial] force into a narrow space:she wedged her holdall between two bags
drive a wedge between
separate:the general aimed to drive a wedge between the city and its northern defences
cause disagreement or hostility between:I’m not trying to drive a wedge between you and your father
the thin end of the wedge
informal an action or procedure of little importance that is likely to lead to more serious developments:a charge for nursery classes would be the thin end of the wedge and lead to charges for ordinary schooling
Old Englishwecg (noun), of Germanic origin; related to Dutch wig