a piece of wood, rubber, metal, etc. with one thick end and one thin, pointed end that you use to keep a door open, to keep two things apart, or to split wood or rock 楔子；三角木 something that is like a wedge in shape or that is used like a wedge 楔形物；用作楔子的东西 a wedge of cake/cheese 切成楔形的蛋糕 [乳酪] shoes with wedge heels 坡跟鞋
Extra ExamplesHe cut a great wedge out of the cake and began to eat it. 他切下一大角蛋糕，开始吃了起来。 Serve the fish with salad and wedges of lemon. 鱼要配上沙拉和楔形柠檬块一起上。
a shoe with a wedge heel (= one that forms a solid block with the bottom part of the shoe) 坡跟鞋 
a pair of wedges 一双坡跟鞋
a type of golf club that has its face (= the part that you hit the ball with) at a greater angle than other types of golf club （高尔夫球）楔形铁头球杆，挖起杆
Word OriginOld English wecg (noun), of Germanic origin; related to Dutch wig.
Idioms
drive a wedge between A and B
the thin end of the wedge
- (especially British English)
an event or action that is the beginning of something more serious and/or unpleasant （不好的事物的）端倪，冰山一角 The introduction of a tax on workplace parking is seen by many as the thin end of the wedge. 对工作场所停车征税的引入被许多人视为楔形的细端。